Orthopedic Billing Questions,
Answered Honestly

Orthopedic medical billing is the process of submitting and managing insurance claims for services provided by orthopedic practices — things like fracture care, joint injections, arthroscopic surgeries, and physical therapy. It involves assigning the correct CPT and ICD-10 codes, sending claims to insurers, following up on unpaid claims, and appealing denials. It's one of the most complex specialties in medical billing because orthopedic procedures often involve multiple body parts, bilateral procedures, surgical packages, and very specific documentation requirements.

Orthopedic billing involves hundreds of procedure-specific CPT codes covering everything from simple fractures to complex spinal fusions. A few things make it uniquely difficult:

• Many procedures require correct laterality coding — left vs. right side matters
• Surgical packages include follow-up care in the global period, so billing separately for those visits is an error
• Modifiers like 59, 50, LT, and RT must be used correctly or claims get denied
• Payers like Medicare and Medi-Cal have very different rules than commercial insurers
• Prior authorization is required for many orthopedic surgeries before they happen

One wrong code or missing modifier can shift a claim from paid to denied instantly.

Orthopedic Billing Expert is an educational platform and connection service. We publish detailed, free guides on orthopedic billing codes, denial management, and patient reimbursement. We also connect orthopedic providers and patients with certified billing professionals who specialize specifically in orthopedic billing in California and Florida. Think of us as your billing knowledge hub — we educate you first, then match you with the right expert when you need hands-on help.

We connect you with experts. We are not a billing company ourselves. Instead, we understand orthopedic billing deeply enough to match you with the right certified professional for your specific situation — whether that is a coder, a biller, an RCM manager, or a patient billing advocate. This means you always get someone with the exact expertise your case needs, not a generalist.

We currently focus on California and Florida. Both states have unique billing rules, insurance regulations, and payer-specific policies that require local expertise. For example, California has Medi-Cal rules and Independent Medical Review (IMR) rights that differ significantly from Florida Medicaid. Our connected experts understand these state-specific nuances deeply. We may expand to other states in the future.

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Both. We deliberately write two types of content. Our Billing and Coding articles are written for orthopedic providers, billers, and coders — they cover CPT codes, ICD-10 coding, modifiers, and payer rules. Our Patient Billing articles are written in plain English for patients who got a confusing bill, received a denial, or want to understand their insurance rights. You can browse by category using the navigation menu on our blog.

Yes, every single article on our blog is completely free — no paywall, no email gate, no subscription required. We believe both providers and patients deserve access to honest, accurate billing information without jumping through hoops to get it. Our goal is to be the most useful free resource for orthopedic billing on the internet, and we take that seriously.

We help a wide range of orthopedic providers including: solo orthopedic surgeons, group orthopedic practices, nurse practitioners in orthopedic clinics, physical therapy practices, spine surgery centers, sports medicine practices, and orthopedic urgent care facilities. Whether you are a one-doctor practice or a multi-location group, the billing challenges are similar — and we have resources and connections for all of them.

CPT stands for Current Procedural Terminology. These are five-digit codes that describe exactly what medical service or procedure was performed. In orthopedics, a CPT code tells the insurance company whether you did a simple injection, a knee arthroscopy, or a total hip replacement. Each code has a specific reimbursement amount. Using the wrong CPT code — even by one digit — can cause a claim to be denied, underpaid, or flagged for an audit. That's why code accuracy is the foundation of orthopedic billing.

ICD-10 codes describe the patient's diagnosis — the reason they needed care. For example, M17.11 means primary osteoarthritis of the right knee. Insurers require that every procedure code (CPT) be paired with a diagnosis code (ICD-10) that medically justifies it. If the diagnosis code does not support the procedure, the claim gets denied for "lack of medical necessity." In orthopedics, ICD-10 codes also require laterality — you must specify left knee, right shoulder, bilateral hip, and so on.

Technically yes, but it is increasingly difficult. In-house billing teams face constant pressure from code updates, changing payer policies, prior authorization requirements, and complex modifier rules. A staff member who handles billing for a general practice may not have the specific orthopedic coding knowledge needed to catch errors before submission. Many small practices find that outsourcing to an orthopedic-specific biller or RCM manager recovers enough lost revenue to more than pay for the cost of the service.

Studies consistently show that orthopedic practices lose between 10% and 30% of potential revenue due to coding errors, missed charges, uncollected copays, and unworked denials. With an average orthopedic claim value higher than most specialties, even a 5% improvement in billing accuracy can mean tens of thousands of dollars per year for a mid-sized practice. This is why many practices that invest in specialized orthopedic billing expertise see an ROI within the first few months.

They are related but different roles. A medical coder reads clinical documentation and translates it into the correct CPT, ICD-10, and HCPCS codes. A medical biller takes those codes and manages the claims process — submitting claims to insurers, following up on payment, posting payments, and working denials. In small practices, one person often does both. In larger practices or outsourced billing companies, they are separate roles. For orthopedics specifically, you want professionals who are trained in both areas for this specialty, not generalists.

CPT code 27447 is used for a total knee arthroplasty (replacement). This is one of the most commonly billed orthopedic procedures and also one of the most closely audited. Key billing notes for 27447: it includes a 90-day global period, meaning routine follow-up visits within 90 days of surgery are bundled into the payment and cannot be billed separately. If the patient has a complication requiring a return to the OR, that is billed separately with modifier 78. Always document the implant details, surgical approach, and diagnosis clearly — Medicare and commercial payers audit this code frequently.

A global surgical period is a set number of days following a surgery during which routine follow-up care is considered bundled into the original surgical payment. Medicare assigns global periods to most surgical CPT codes — either 0 days, 10 days, or 90 days. For example, a total knee replacement (27447) has a 90-day global period. During those 90 days, if the patient comes back for a normal post-op check, you cannot bill separately for that visit. If you do, the claim will be denied. However, visits for unrelated problems or complications requiring additional procedures can still be billed — just with the right modifiers.

Modifier 59 tells the insurance company that two procedures that are normally bundled together were actually performed as separate, distinct services in this specific case. In orthopedics, this comes up frequently when a surgeon performs multiple procedures on the same day. For example, if a patient has both a knee arthroscopy with meniscectomy (29881) and a chondroplasty (29877) on the same day, the payer might bundle them. Appending modifier 59 to the secondary procedure, with proper documentation showing it was a distinct service, allows both to be reimbursed. Misusing modifier 59 is a common audit trigger, so it should only be used when genuinely justified by documentation.

Rotator cuff repair CPT codes depend on the approach and extent of the repair:

• 29827 — Arthroscopic rotator cuff repair (most commonly used)
• 23412 — Open repair of chronic rotator cuff tear
• 23410 — Open repair of acute rotator cuff tear

Documentation must clearly state whether the repair was performed arthroscopically or open, and whether the tear was acute or chronic. If the surgeon also performs a subacromial decompression (29826), that can often be billed separately — but check payer bundling rules first, as some payers bundle it with the repair.

Modifier 50 is the bilateral procedure modifier. It is appended to a CPT code when the same procedure is performed on both sides of the body in the same operative session — for example, bilateral knee injections or bilateral carpal tunnel releases. For Medicare, you typically list the code once with modifier 50. For some commercial payers, you may need to list the code twice — once with modifier RT (right side) and once with modifier LT (left side). Always check the specific payer's billing guidelines before submitting bilateral claims, as the rules differ and submitting incorrectly is a common reason for denials.

The most common CPT code for a knee joint injection (including cortisone injections) is 20610 — Arthrocentesis, aspiration and/or injection, major joint or bursa. This includes the knee, shoulder, hip, and ankle. If the injection is done under ultrasound guidance, you can also bill 76942 for the imaging guidance — but make sure your documentation clearly supports the medical necessity of guidance. For hyaluronic acid (viscosupplementation) injections, the drug itself is billed separately using the appropriate HCPCS code (such as J7321 for Hyalgan).

Unbundling means billing separately for multiple services that should be included under a single comprehensive CPT code. For example, if a surgical package includes closure of the wound, billing additionally for wound closure is unbundling. The problem is twofold: first, payers will deny or recoup the extra payments. Second, if it happens repeatedly, it can be flagged as fraud — even if unintentional. Orthopedic practices are particularly vulnerable because many procedures have multiple components that could theoretically be coded separately. A certified orthopedic coder knows which codes are bundled and avoids these errors.

Based on billing data across orthopedic practices, the most frequently denied CPT codes include:

• 20610 — Joint injections (often denied for lack of prior auth or missing diagnosis)
• 27447 — Total knee replacement (high-value, heavily audited)
• 29881 — Knee arthroscopy with meniscectomy (bundling issues)
• 99213/99214 — Office visit E/M codes (medical necessity documentation issues)
• 22630 — Lumbar interbody fusion (prior auth and medical necessity denials)

The most common reasons for denial across all codes are missing prior authorization, incorrect modifier usage, and ICD-10 codes that do not medically justify the procedure.

CPT 27447 is a total knee arthroplasty — replacement of both the femoral and tibial components of the knee joint. CPT 27446 is a unicompartmental (unicondylar) knee arthroplasty, which only replaces one compartment of the knee (medial or lateral). The procedures are different in scope, cost, and recovery. Billing 27447 when a unicompartmental procedure was actually performed is a coding error that can trigger an audit. Documentation should clearly state which type of arthroplasty was performed and which compartments were addressed.

For most major orthopedic surgeries — yes, prior authorization is required by most insurers and is now expanded under 2025 CMS guidelines. This includes joint replacements, spinal fusions, arthroscopic surgeries, and many injection procedures. The prior authorization process requires submitting clinical documentation that demonstrates medical necessity before the procedure happens. If prior authorization is not obtained and the procedure goes ahead, the claim will almost certainly be denied and the provider may end up absorbing the cost. Always verify authorization requirements with the specific payer before scheduling any elective orthopedic surgery.

The CPT code for ORIF of a femoral neck hip fracture is 27236. For intertrochanteric hip fractures treated with ORIF, the code is 27244 (with intramedullary implant) or 27245 (with plate/screw). The correct code depends on the exact fracture location and the fixation method used. Always pair with the appropriate ICD-10 code including laterality (e.g., S72.001A for initial encounter, left femoral neck fracture) and encounter type (A for initial, D for subsequent, S for sequela).

Modifier 25 is appended to an evaluation and management (E/M) visit code to indicate that the E/M service was a significant, separately identifiable service from a procedure also performed on the same day. For example, if a patient comes in for a knee injection (20610) but also receives a separately documented E/M visit because of a new complaint — say a shoulder problem — you can bill both. The E/M gets modifier 25. Without modifier 25, payers will bundle the E/M into the procedure payment. The key is that the E/M must be genuinely separate and documented separately — not just routine pre-procedure assessment.

Orthopedic braces and durable medical equipment (DME) are billed using HCPCS Level II codes rather than CPT codes. Common examples include:

• L1820 — Knee orthosis, elastic with stays
• L0631 — Lumbar-sacral orthosis (LSO), sagittal-coronal control
• L3900 — Wrist-hand-finger orthosis (WHFO)
• L2106 — Ankle-foot orthosis (AFO), fracture orthosis

Medicare and Medicaid have strict documentation requirements for DME — you need a Certificate of Medical Necessity (CMN) for most items. Billing DME without proper documentation is one of the most audited areas in orthopedics.

The 7th character in ICD-10 fracture codes indicates the type of encounter — whether the patient is being seen for the first time for the injury or for follow-up. The most important characters are:

• A — Initial encounter (active treatment)
• D — Subsequent encounter (routine healing)
• G — Subsequent encounter for fracture with delayed healing
• K — Subsequent encounter for fracture with nonunion
• S — Sequela (complications)

Using the wrong 7th character is one of the most common ICD-10 errors in orthopedic billing. For example, using "A" (initial encounter) on a routine follow-up visit can trigger a denial because the payer expects "D" for a healing fracture check.

Yes, but it requires careful documentation and the correct modifier. If a new patient is seen, a decision is made to perform a procedure, and the procedure happens on the same day, you can bill both the new patient E/M code (99202-99205) and the procedure code — but you must append modifier 25 to the E/M code. The E/M documentation must stand on its own as a complete, separate service. Some payers are very strict about this and may still deny it, so always check payer-specific policies. Medicare generally allows it with proper documentation.

Lumbar fusion codes depend on the approach and technique:

• 22630 — Lumbar arthrodesis, posterior interbody technique (PLIF/TLIF)
• 22558 — Lumbar arthrodesis, anterior interbody technique (ALIF)
• 22612 — Lumbar arthrodesis, posterolateral technique
• 22840-22848 — Spinal instrumentation codes (billed in addition)

Spine surgeries typically require multiple codes — the fusion code plus instrumentation codes plus bone graft codes. Documentation must specify the exact vertebral levels, the approach, and all hardware used. These are among the most audited codes in all of medicine due to their high reimbursement values.

A clean claim is a claim that contains all required information, has no errors, and is submitted correctly the first time. Insurers are generally required by law to process clean claims within 30 days (Medicare) or 45 days (most commercial payers). A dirty claim — one with errors, missing information, or incorrect codes — gets kicked back and delays payment. In orthopedic billing, achieving a high clean claim rate (ideally above 95%) is a key performance indicator. Common reasons claims are not clean include missing prior auth numbers, incorrect patient demographics, wrong place of service codes, and missing modifiers.

An NPI (National Provider Identifier) is a 10-digit number that uniquely identifies a healthcare provider. Type 1 NPI is assigned to individual providers — a specific orthopedic surgeon, for example. Type 2 NPI is assigned to organizations — a clinic, a group practice, or a hospital. When billing, the claim must include both the individual provider's Type 1 NPI (in box 24J on a CMS-1500 form) and the billing entity's Type 2 NPI (in box 33a). Using the wrong NPI or forgetting to include both is a surprisingly common reason for claim rejections.

Place of service (POS) codes tell the insurer where the service was provided, and the reimbursement rate often depends on it. POS 11 is an office setting — typically higher reimbursement because the provider is responsible for overhead costs. POS 22 is an on-campus outpatient hospital setting — typically lower reimbursement because the hospital is paid separately for the facility fee. Billing the wrong POS code can cause denials or significant underpayment. For example, if a procedure is performed in the office but billed with POS 22, you may receive far less than expected.

Fracture care in orthopedics includes a global period — for most closed fracture treatments, the global period is 90 days. The initial fracture care CPT code (for example, 25600 for a closed treatment of a distal radius fracture) includes all routine follow-up visits during the 90-day global period. You cannot bill separately for those follow-up X-rays or cast changes that are part of routine fracture management. However, casting supplies (A4570) can sometimes be billed separately depending on the payer. And if an X-ray reveals a complication requiring additional treatment beyond routine management, that is billed with the appropriate code plus modifier 58 or 79.

After analyzing thousands of orthopedic claim denials, these are the most common root causes:

• Missing or incorrect prior authorization — the most frequent and most preventable
• Medical necessity not established — the ICD-10 diagnosis does not adequately support the procedure
• Wrong or missing modifiers — especially 59, 50, LT/RT, 25, and 26/TC
• Incorrect CPT code — procedure coded at wrong level or wrong laterality
• Exceeded timely filing deadline — claim submitted after the allowed window
• Patient not eligible on date of service — insurance lapsed, wrong payer billed
• Duplicate claim submission
• Missing 7th character on ICD-10 fracture codes

Most denials are correctable — which is why a fast, systematic denial management process is essential.

Timely filing deadlines vary by payer. Medicare requires claims to be submitted within 12 months (1 year) of the date of service. Medi-Cal in California requires submission within 12 months as well. Most commercial payers require claims within 90 to 180 days — and some are as short as 30 to 60 days. Missing the timely filing deadline is one of the few denial reasons that is almost impossible to overcome on appeal. The fix is prevention: submit all claims within 30 days of service and track outstanding claims weekly to catch anything that slips through.

These are two different things and require different responses. A rejection happens before the claim is processed — the payer's system kicks it back because of a technical error (wrong NPI, invalid code format, missing required field). Rejections are not final — you correct the error and resubmit. A denial happens after the claim has been received and reviewed — the payer makes a decision not to pay for a specific reason (not medically necessary, no prior auth, wrong code). Denials require a formal appeal process. Rejections are quicker to fix; denials take more work but are often worth fighting.

The appeal process typically follows these steps:

• Step 1: Identify the denial reason from the Explanation of Benefits (EOB)
• Step 2: Pull the payer's appeal guidelines — each payer has a specific process and deadline
• Step 3: Gather supporting documentation — operative notes, medical records, prior auth confirmation, clinical guidelines
• Step 4: Write a formal appeal letter addressing the specific denial reason with supporting evidence
• Step 5: Submit by the deadline (usually 30 to 180 days from denial date depending on payer)
• Step 6: Follow up — if the first appeal is denied, escalate to a second-level appeal or external review

The most important thing is to address the specific denial reason directly and provide clinical evidence that supports the service.

Appeal deadlines vary significantly by payer. Medicare allows 120 days from the date of the denial notice for a redetermination (first-level appeal). Many commercial payers allow 30 to 180 days. California's Medi-Cal gives providers 90 days. Some commercial payers are as strict as 30 days. Always check the specific payer's EOB or provider handbook for the exact deadline. Missing the appeal deadline almost always means forfeiting the right to appeal — so tracking denial dates and appeal windows is critical in denial management.

A peer-to-peer review is when your treating physician speaks directly with the payer's medical reviewer to discuss why a procedure is medically necessary. This is most commonly used when a prior authorization has been denied or when a claim is denied for "not medically necessary." It is one of the most effective tools in orthopedics — studies show peer-to-peer conversations overturn denials a significant percentage of the time. The surgeon or ordering physician must request it promptly — usually within 5 to 10 business days of the denial. Come prepared with clinical guidelines, imaging results, and documented failed conservative treatment.

CO-29 is a denial code that means "the time limit for filing has expired" — in other words, the timely filing deadline was missed. This is one of the hardest denials to overturn, but it is not impossible. To appeal a CO-29 denial, you need to provide proof that the claim was actually submitted on time — such as a clearinghouse confirmation report, a paid claim history showing earlier submissions, or a proof of timely filing document. If you cannot prove timely filing, the denial will almost certainly stand. Prevention is the only real solution: implement a claim tracking system that flags any claim not submitted within 30 days of service.

CO-4 means "the service is inconsistent with the modifier" — essentially, the modifier you appended to the CPT code does not apply to that code, or the documentation does not support the modifier used. This is common in orthopedic billing where modifier usage is complex. For example, appending modifier 59 to a code that has no NCCI bundling issue, or using modifier 50 on a procedure that is inherently bilateral. To fix CO-4: review the exact code and modifier combination, check if the documentation supports the modifier, check NCCI edits for that code, and resubmit with the correct modifier or without one if it is not warranted.

A medical necessity denial means the payer's reviewer determined that the service was not clinically required based on the documentation provided. In orthopedics, this is extremely common for joint replacements, spinal surgeries, and injections. To fight a medical necessity denial effectively:

• Request the payer's coverage determination criteria (they are required to provide this)
• Compare your documentation to their criteria and identify any gaps
• Have the treating physician write a detailed letter explaining why the procedure was medically necessary, citing specific patient history, failed conservative treatments, imaging results, and functional limitations
• Reference peer-reviewed clinical guidelines (AAOS, AMA) that support the treatment
• Request a peer-to-peer review

Most medical necessity denials for legitimate orthopedic procedures can be successfully appealed with thorough documentation.

Yes, and you should always appeal prior authorization denials for medically necessary procedures. The appeal process for prior auth denials is similar to claims appeals — you gather clinical documentation supporting medical necessity, reference the payer's own coverage criteria, and submit a formal reconsideration request. For urgent or time-sensitive cases, you can request an expedited appeal — most payers must respond within 72 hours for expedited reviews. In California, patients also have the right to request an Independent Medical Review (IMR) through the DMHC if the internal appeal is denied. In Florida, patients can file a complaint with the Florida Office of Insurance Regulation.

A remittance advice (RA), also called an Explanation of Benefits (EOB), is the document an insurer sends after processing a claim. It tells you what was billed, what was paid, what was adjusted, and why any portion was denied. Each line item has adjustment reason codes and remark codes that explain the payer's decision. In orthopedic billing, the most important codes to understand are CO (contractual obligation — amount written off per contract), PR (patient responsibility), and OA (other adjustments). When you receive an RA with a denial, the reason codes are your roadmap for the appeal. Never ignore an RA — even partial payments may have underpaid amounts worth correcting.

If a first-level appeal is denied, you have several escalation options. For Medicare, you can escalate to a Qualified Independent Contractor (QIC) review, then an Administrative Law Judge (ALJ) hearing, then the Medicare Appeals Council, and finally federal court. For commercial plans, a second internal appeal is often available, followed by an external review by an independent organization. In California, patients and providers can request an Independent Medical Review through the DMHC — and the insurer must accept the IMR's decision. In Florida, you can file with the Florida Department of Financial Services. For claims worth significant amounts, escalating all the way is absolutely worth it.

CO-45 means "charge exceeds fee schedule/maximum allowable" — the payer is reducing the payment to the contracted rate. This is a contractual adjustment, not a true denial. The amount written off with CO-45 represents the difference between your billed amount and your contracted rate with the payer. You are contractually prohibited from billing the patient for this difference (this is called balance billing, which is generally illegal for in-network providers). However, the patient is still responsible for any deductible, copay, or coinsurance amounts shown on the remittance advice. CO-45 is normal — what is not normal is if the contracted rate itself seems too low, in which case you can review your contract or renegotiate.

Reducing denials requires a systematic front-end, mid-cycle, and back-end approach:

• Front-end: Verify insurance eligibility before every appointment. Obtain prior authorizations before procedures. Collect accurate patient demographics and insurance information at registration.
• Mid-cycle: Use a claim scrubber to catch errors before submission. Train coders specifically on orthopedic coding. Review documentation for medical necessity before coding.
• Back-end: Work every denial within 48 hours of receipt. Track denial reasons by code and payer. Identify patterns and address root causes. Monitor timely filing windows closely.

Practices that implement all three layers typically see denial rates drop from 15-20% to under 5% within 6 months.

The No Surprises Act (effective January 1, 2022) protects patients from unexpected medical bills in several key ways relevant to orthopedics. First, it prohibits out-of-network providers from billing patients more than in-network cost-sharing amounts for emergency care. Second, it requires providers to give patients a Good Faith Estimate before scheduled services if the patient is uninsured or self-pay. Third, if a patient receives a bill that is $400 or more above the Good Faith Estimate, they have the right to dispute it through an independent resolution process. For orthopedic practices, this means accurate cost estimates must be provided before elective procedures — and surprise billing for out-of-network services at in-network facilities is prohibited.

Claim scrubbing is the process of running claims through automated software checks before submitting them to payers. A claim scrubber catches errors like incorrect code combinations, missing modifiers, invalid diagnosis codes, NCCI edits violations, and demographic errors before the claim ever reaches the insurer. In orthopedic billing, scrubbing is particularly valuable because of the complexity of modifier usage, bilateral procedure rules, and bundling edits. Most practice management and billing software has built-in scrubbing. Using a scrubber consistently is one of the simplest ways to improve clean claim rates and reduce denial rates significantly.

NCCI stands for National Correct Coding Initiative. It is a set of edits created by CMS (Centers for Medicare and Medicaid Services) that identifies pairs of CPT codes that should not be billed together because one is considered included in the other. For example, certain arthroscopic procedures include specific services that should not be coded separately. In orthopedics, NCCI edits are triggered frequently because surgeons often perform multiple procedures in the same operative session. Understanding NCCI edits and knowing when modifier 59 legitimately overrides them — versus when it does not — is fundamental to accurate orthopedic billing.

A write-off is when a practice removes an outstanding balance from its accounts receivable with no expectation of collection. There are legitimate write-offs — like the contractual adjustment (CO-45) where you write off the amount above your contracted rate — and there are inappropriate write-offs. Inappropriately writing off denied claims without working them first is one of the biggest revenue leakages in orthopedic practices. Before any balance is written off, it should be reviewed: Was the denial valid? Was an appeal attempted? Was the patient billed for their responsibility? Blanket write-offs of denied claims without analysis is a practice management problem that costs practices real money.

AR days (days in accounts receivable) measures the average number of days it takes your practice to collect payment after a service is rendered. It is calculated by dividing total AR by average daily charges. For orthopedic practices, a healthy AR days figure is typically under 35 days for Medicare and under 45 days for commercial payers. If your AR days are over 60, it typically indicates problems with claim submission speed, denial rates, or insufficient follow-up on unpaid claims. Tracking AR days by payer helps identify which insurers are slow to pay and where follow-up efforts should be concentrated.

From a pure ROI standpoint, it depends on the denial reason and the amount. However, there is a strategic reason to appeal even small claims: payer behavior. If insurers learn that a practice does not appeal small denials, they may apply those denial patterns more broadly knowing the practice will not push back. Many billing experts recommend appealing all denials where the denial reason is incorrect — regardless of amount — to maintain your practice's reputation as one that actively monitors and pursues its claims. For very small balances (under $25), the cost of staff time may genuinely exceed the recovery value, and a write-off is reasonable. But for $100 to $500 denials, appeals are almost always worth the effort.

First, do not panic — a large percentage of initial insurance denials for orthopedic procedures are successfully overturned on appeal. Here is exactly what to do:

• Step 1: Get the denial letter and read it carefully — understand exactly why it was denied (medical necessity, out of network, no prior auth, etc.)
• Step 2: Call your insurer and ask for the specific medical criteria they used to make the denial decision — they are legally required to provide this
• Step 3: Contact your surgeon's office — they deal with appeals constantly and can often do the heavy lifting for you
• Step 4: Note the appeal deadline on the denial letter — usually 30 to 60 days — and do not miss it
• Step 5: File an internal appeal with supporting documentation from your surgeon

The most important thing is to act quickly. Deadlines are strict.

An EOB is a document your insurance company sends after processing a claim. It is not a bill — it is a summary of what was charged, what your insurance paid, what was adjusted, and what you may owe. Key sections to look at:

• Amount billed: What your provider charged
• Amount allowed: The contracted rate your insurer agreed to pay for that service
• Amount paid: What insurance actually paid to your provider
• Your responsibility: Your deductible, copay, or coinsurance amount
• Reason codes: If anything was denied or adjusted, codes explain why

Compare your EOB to the bill from your provider. If the numbers do not match, call your provider's billing department to clarify before paying anything.

Yes — if you have insurance, you can often still file a reimbursement claim even if you paid out of pocket. This is called a retroactive or post-service claim. You will need:

• The itemized bill from your provider showing the CPT codes, ICD-10 codes, and dates of service
• Proof of payment (receipt)
• Your insurance card details
• The claim form from your insurer (usually a CMS-1500 or the insurer's own patient claim form)

Submit all documents to your insurer along with the completed claim form. Be aware that your insurer's timely filing deadline applies — for most plans it is 90 to 180 days from the date of service. If you are close to the deadline, act immediately.

An out-of-network provider is one that has not signed a contract with your insurance company. When you see an out-of-network orthopedic surgeon, your insurance typically pays less — or nothing — and you may be responsible for the rest. HMO plans generally do not cover out-of-network care at all except in emergencies. PPO plans usually cover some portion of out-of-network costs but at a higher cost-sharing rate. However, the No Surprises Act (2022) now prohibits many unexpected out-of-network bills — particularly for emergency care and for out-of-network providers at in-network facilities. If you received a large out-of-network bill that surprised you, you may have grounds to dispute it.

Absolutely — and you should. Medical billing errors are surprisingly common. Studies suggest a significant portion of medical bills contain errors. To dispute a bill:

• Request an itemized bill from your provider — not a summary, but a detailed list of every charge with the CPT code and description
• Compare it to your EOB from your insurer
• Look for duplicate charges, services you did not receive, or codes that do not match what happened
• Call the provider's billing department first — many errors are corrected quickly
• If the provider insists the bill is correct but you believe it is not, contact your insurer and ask them to review the claim
• Under the No Surprises Act, if a self-pay bill is $400+ more than the Good Faith Estimate you received, you can initiate a formal dispute

The timeline depends on the type of appeal. For internal appeals (within the insurance company): standard appeals typically get a response within 30 to 60 days. For pre-authorization appeals, 30 days is standard. For urgent situations where waiting could harm your health, you can request an expedited appeal — insurers must respond within 72 hours. For external appeals (independent review organization), the decision typically comes within 45 to 60 days for standard reviews and within 72 hours for expedited reviews. In California, the DMHC IMR process typically resolves within 30 days for standard cases and within 3 days for expedited urgent cases.

A deductible is the amount you pay out of pocket before your insurance starts contributing to your care costs. For example, if your deductible is $2,000 and you need a knee arthroscopy early in the year, you may owe the first $2,000 of that procedure's cost before insurance pays anything. If you have already met your deductible through earlier medical visits that year, insurance starts paying from dollar one. Orthopedic procedures — especially surgeries — are often expensive enough to meet your entire annual deductible in a single claim. If you are scheduling an elective orthopedic procedure, it can be financially strategic to time it based on your deductible status for that year.

Medical necessity is the standard insurers use to decide whether a procedure is clinically appropriate and required for your health. When they deny a knee replacement as "not medically necessary," they are saying — based on the documentation submitted — that the criteria for approving the procedure were not clearly met. Common reasons include: insufficient documentation of failed conservative treatments (physical therapy, injections, medications), imaging reports that do not clearly show the degree of joint damage, or a diagnosis code that does not fully capture the severity of your condition. The good news: these denials are highly appealable. Your surgeon needs to submit a detailed letter documenting your full history, failed treatments, functional limitations, and clinical findings. Most are overturned.

A copay is a fixed dollar amount you pay for a specific service — for example, $30 for every specialist visit regardless of the total cost of the visit. Coinsurance is a percentage of the cost you share with your insurer after your deductible is met — for example, 20% coinsurance means you pay 20% of the allowed amount and insurance pays 80%. For expensive orthopedic procedures, coinsurance can add up quickly. If your allowed amount for a total knee replacement is $20,000 and you have 20% coinsurance, you owe $4,000. Knowing your cost-sharing structure before a procedure helps you plan financially and avoid surprises.

Yes — and in many cases, your doctor's office is your most powerful ally in an appeal. Your surgeon can: write a detailed letter of medical necessity explaining why the procedure was clinically required, submit supplementary clinical documentation like imaging reports and examination findings, request a peer-to-peer review where the surgeon speaks directly with the insurance company's medical reviewer, and in many cases, submit the appeal on your behalf if you provide written authorization. If your surgeon's office says they will handle the appeal, follow up regularly to confirm it has been submitted and track the response deadline.

An IMR is a process unique to California where an independent medical expert — completely outside of your insurance company — reviews your insurer's denial decision. It is managed by the California Department of Managed Health Care (DMHC) for HMO plans, or the California Department of Insurance (CDI) for PPO plans. The IMR is free to you and the insurer must accept the IMR's decision as final. To request an IMR, you must have already filed an internal appeal with your insurer that was denied or not resolved within the required timeframe. You have 6 months from the final internal denial to request an IMR. This is one of the strongest patient rights available anywhere in the US — California patients should use it.

Before paying, check these things:

• Did you see an in-network provider? Your insurance card or the insurer's website can confirm provider status
• Had you met your deductible at the time of the visit? If not, you may owe the full allowed amount up to your deductible
• Does the bill match your EOB? Request an EOB from your insurer if you haven't received one
• Was prior authorization obtained if required? Check your plan's list of services requiring prior auth
• Is the bill itemized? Ask for an itemized bill showing each CPT code to check for errors
• Was the correct insurance information submitted? Verify the provider billed the right insurer with your correct member ID

Many unexpected bills result from simple administrative errors that can be corrected with a phone call.

Keep all of the following in a dedicated folder (paper or digital): your insurance card and plan documents, any pre-authorization approvals received before the procedure, all Explanation of Benefits from your insurer, all itemized bills from the provider, all receipts if you paid anything out of pocket, any written communications with your insurer or provider's billing office, and notes from any phone calls including date, time, and the name of the representative you spoke with. If a dispute or appeal arises later, this documentation is your evidence. Medical billing disputes can take months to resolve, and having clear records from day one makes everything significantly easier.

This is more common than it should be. First, contact the collections agency and request that they pause collection activity while you investigate — many will cooperate for a reasonable period. Then: contact your insurer and ask whether the claim was ever submitted. If it was not, your provider's billing department may need to submit it (check if it is within the filing deadline). If it was submitted and denied, request the denial reason and EOB. Contact your provider's billing department to discuss the bill — let them know you never received an EOB and ask them to verify your insurance was billed correctly. If the bill is incorrect or was never properly submitted to insurance, the collections action may be premature. Document everything and do not ignore it — collections can affect your credit.

Balance billing is when a provider bills you for the difference between their full charge and the amount your insurance paid — on top of your normal cost-sharing (deductible, copay, coinsurance). For in-network providers, balance billing is prohibited — they have contracted rates and cannot charge more than your plan allows. For out-of-network providers, the rules are more complex. California's AB 72 and the federal No Surprises Act now prohibit balance billing for out-of-network services in specific situations — including emergencies and when an out-of-network provider treats you at an in-network facility without your knowledge. In Florida, SB 1222 also provides protections against surprise balance billing. If you receive a balance bill and believe it violates these laws, you can file a complaint with your state's insurance regulator.

Always verify network status through your insurer directly — do not rely solely on the provider's office or online directories, as these can be outdated. The most reliable way: call the member services number on the back of your insurance card and ask specifically if the surgeon (use their NPI number if possible) is in-network for your specific plan. Some surgeons are in-network with an insurer generally but not for all of that insurer's plans — a PPO plan and an HMO plan from the same company may have different networks. Also verify that the facility where the surgery will be performed is in-network, not just the surgeon — out-of-network facility fees can be very large.

Yes. Under the No Surprises Act (effective January 1, 2022), if you are uninsured or if you choose not to use your insurance, you have the right to receive a Good Faith Estimate (GFE) before scheduled medical services. The GFE must be provided at least 3 business days before your appointment and must list all expected charges. If your actual bill comes in $400 or more above the GFE, you have the right to dispute it through an independent Patient-Provider Dispute Resolution process managed by CMS. If you are insured and using your insurance, you are entitled to a cost estimate but the GFE dispute process does not apply.

Yes — and many people do not realize this is an option. Medical bills are often negotiable, especially for uninsured patients or for balances after insurance. Strategies that work: ask for the itemized bill and check for errors first. Ask the provider's billing department if they offer a self-pay discount — many practices offer 20-40% off for patients who pay cash. Ask about payment plans if the full amount is unaffordable. Ask if they will accept the Medicare allowed amount as payment in full — many providers will. If you are experiencing financial hardship, ask about charity care or financial assistance programs. Nonprofit hospitals are required to have these programs and orthopedic practices may have them too.

Insurance companies are legally required to process clean claims within a specific timeframe — 30 days for Medicare, and typically 30 to 45 days for commercial plans. If your claim is being delayed beyond these windows without explanation: call the insurer and document the call including date, time, and representative's name. Ask for a specific reason for the delay and an estimated resolution date. If delays continue, file a formal complaint with your state insurance regulator — the California DMHC or Florida OIR. You can also request that CMS intervene if Medicare is involved. Persistent unexplained delays can constitute bad faith handling of your claim, and regulators take these complaints seriously.

Yes, Medicare Part A covers inpatient orthopedic surgeries (when you are admitted to a hospital) and Medicare Part B covers outpatient procedures and physician services. For joint replacements like total knee (27447) or total hip (27130) arthroplasty, Medicare covers the procedure when medical necessity is documented — meaning conservative treatments have been tried and failed, and the clinical documentation supports the severity of the condition. Medicare patients typically pay the Part A deductible for inpatient stays plus 20% coinsurance for Part B services after the deductible. If you have a Medicare Supplement (Medigap) or Medicare Advantage plan, cost-sharing rules may differ significantly.

Revenue Cycle Management is the end-to-end process of managing all financial transactions in a healthcare practice — from the moment a patient schedules an appointment to the moment the final payment is collected. In orthopedics, the RCM cycle includes: patient scheduling and registration, insurance eligibility verification, prior authorization, charge capture, medical coding, claim submission, payment posting, denial management, patient billing, and accounts receivable follow-up. A well-run RCM process means faster payments, fewer denials, and more revenue for the same number of patients seen.

Key Performance Indicators (KPIs) for orthopedic billing include:

• Clean claim rate — should be above 95%
• AR days — should be under 35-45 days
• Denial rate — should be under 5%
• Net collection rate — should be above 95% (of what you are contractually owed)
• First pass resolution rate — percentage of claims paid on first submission
• Cost to collect — total billing costs divided by total collections

Tracking these monthly and trending them over time quickly reveals where billing performance is breaking down and where the biggest opportunities for improvement are.

Insurance eligibility verification is the process of confirming that a patient's insurance is active and will cover the services they are coming in for before the appointment happens. It sounds basic, but failing to verify eligibility is one of the top causes of claim denials. Key things to verify: whether the patient is active on the plan, the effective and termination dates, in-network/out-of-network status of your practice, deductible amount and how much has been met, copay and coinsurance amounts, and whether the specific procedure requires prior authorization. Verification should happen for every patient, every visit — not just new patients. Insurance can change or lapse at any time.

There is no single right answer — it depends on your practice's size, volume, and existing team capabilities. In-house billing gives you direct control and can work well with a trained, dedicated orthopedic billing specialist. The challenge is maintaining up-to-date orthopedic coding expertise, covering staff turnover, and managing the technology costs. Outsourcing to an orthopedic-specific billing service gives you access to specialized expertise and often improves collection rates — but you lose some direct visibility. A useful benchmark: if your denial rate is above 10% or your AR days are above 50, something is not working — whether in-house or outsourced. Use the data to guide the decision rather than making it on assumption.

Charge capture is the process of recording every billable service provided so it can be included on the claim. In orthopedics, missed charges are a significant and often invisible revenue problem. Common missed charges include: implants and supplies used during surgery, add-on procedure codes that legitimately apply to the primary surgery, post-operative visits that fall outside the global period, diagnostic imaging read by the orthopedic surgeon, and DME dispensed in the office. The fix is a systematic charge capture process — typically using encounter forms, operative note review, and regular charge capture audits. It is estimated that most orthopedic practices miss 3-5% of billable charges, which translates to meaningful lost revenue annually.

A fee schedule is a list of maximum allowed amounts a payer will pay for specific services. Medicare's fee schedule is the Medicare Physician Fee Schedule (MPFS) — published annually and updated each January. Commercial payers have their own fee schedules, which are typically set as a percentage of Medicare rates (e.g., 120% of Medicare). Your billed charges should always be higher than the highest fee schedule you accept — if your billed amount is lower than what a payer would allow, you are leaving money on the table. Reviewing and updating your fee schedule annually, especially after the Medicare conversion factor changes, is an important revenue cycle management task.

The 2025 Medicare Physician Fee Schedule reduced the conversion factor by approximately 2.9%, translating to roughly 1% lower overall Medicare reimbursements for orthopedic surgeons when accounting for relative value unit (RVU) changes across specific codes. Additionally, CMS expanded prior authorization requirements for several high-cost orthopedic procedures, stricter modifier documentation rules were implemented, and telehealth billing for remote monitoring during post-operative orthopedic care was updated. Orthopedic practices heavily dependent on Medicare revenue should review their top 20 billing codes annually against the new fee schedule and evaluate whether contract renegotiations with commercial payers are warranted given the Medicare rate changes.

Credentialing is the process of applying to and being accepted by insurance companies as an approved in-network provider. Until a provider is fully credentialed with a payer, they cannot submit claims to that payer — any services rendered during the credentialing gap may not be reimbursable. For orthopedic practices adding new physicians, completing credentialing should be a top priority before the provider starts seeing patients. The process typically takes 60 to 120 days. Provisional billing is sometimes available during the process, but rules vary by payer. Delayed credentialing is one of the most common and costly revenue cycle problems for growing orthopedic practices.

A bundled payment model is when a single payment covers all services related to a specific episode of care — for example, a total knee replacement including the surgery, hospitalization, rehabilitation, and follow-up care for 90 days. CMS's BPCI Advanced (Bundled Payments for Care Improvement Advanced) program includes several orthopedic procedures. Under bundled payments, practices receive a fixed amount for the entire episode regardless of individual service costs. This incentivizes efficiency and coordination. For orthopedic practices participating in bundled payment programs, detailed tracking of all costs within the episode is critical — as is care coordination with physical therapists, hospitals, and post-acute facilities to keep total costs within the target price.

These are two different ways to measure billing performance and they tell you very different things. The gross collection rate compares total collections to total charges billed. This number is almost always below 100% because your billed charges are always higher than contracted rates — so this metric is not a reliable indicator of billing health. The net collection rate compares total collections to the total amount you are contractually entitled to collect (billed charges minus contractual adjustments). This is the metric that matters. A healthy net collection rate for an orthopedic practice should be 95% or higher. Below 90% indicates a serious problem with uncollected patient balances, unworked denials, or excessive write-offs.

Medi-Cal is California's Medicaid program, providing health coverage to low-income residents. It does cover orthopedic procedures, but with specific rules and limitations. For orthopedic surgeries, Medi-Cal generally requires prior authorization and documentation of medical necessity. Reimbursement rates are typically lower than commercial payers. Billing Medi-Cal requires using specific Medi-Cal billing formats and following the Medi-Cal Provider Manual guidelines. Some managed Medi-Cal plans (through Health Maintenance Organizations like Anthem, Molina, or Health Net) have their own prior authorization requirements on top of standard Medi-Cal rules. Always verify the specific Medi-Cal plan type (fee-for-service vs. managed care) before treating patients.

California patients have some of the strongest insurance rights in the country. When a claim is denied, you have the right to: receive a written denial letter explaining the reason, request all documentation the insurer used to make the decision, file an internal appeal within 30 days of receiving the denial, receive an expedited appeal decision within 72 hours if your health is at urgent risk, request an Independent Medical Review (IMR) through the DMHC or CDI if the internal appeal fails, and file a complaint with the California Department of Managed Health Care (for HMO plans) or the California Department of Insurance (for PPO plans). The IMR process in California is particularly powerful because the insurer must accept the independent reviewer's decision as final and binding.

The process depends on your plan type. For HMO and most managed care plans (including managed Medi-Cal): file with the California Department of Managed Health Care (DMHC) at dmhc.ca.gov or call 1-888-466-2219. For PPO and indemnity plans: file with the California Department of Insurance (CDI) at insurance.ca.gov or call 1-800-927-4357. For Medicare Advantage plans: contact your State Health Insurance Assistance Program (SHIP) at 1-800-434-0222. When filing, include your denial letter, your EOB, any communications with the insurer, and a clear description of what happened. The DMHC can open a formal investigation and often resolves complaints in the patient's favor.

Yes. California's AB 72 (effective July 1, 2017) was one of the first state laws protecting patients from surprise out-of-network bills from physicians at in-network facilities. Under AB 72, if you go to an in-network hospital or ambulatory surgical center, any physician who treats you — including the orthopedic surgeon, anesthesiologist, or radiologist — can only charge you in-network cost-sharing rates even if they are out-of-network. The federal No Surprises Act (2022) expanded these protections nationally and in many ways goes further than AB 72. Together, these laws provide California patients strong protections against the most common types of orthopedic surprise billing situations.

Under California law (Health and Safety Code Section 1371), health plans regulated by the DMHC must pay uncontested claims within 30 working days of receipt. For contested claims, the insurer must acknowledge receipt within 10 working days and must either pay or deny within 45 working days. If insurers fail to meet these timelines, they may be subject to penalties and interest payments on the delayed amount. For providers, this means tracking claim submission dates and following up promptly if payment has not arrived within 30 days. Document all follow-up calls — if you need to file a complaint with the DMHC about delayed payment, your documentation is essential.

California Workers' Compensation (WC) billing for orthopedic procedures follows the Official Medical Fee Schedule (OMFS), which is based on a resource-based relative value scale similar to Medicare but with California-specific conversion factors. Orthopedic WC claims require specific documentation including the First Report of Injury, a treatment plan, and in many cases, authorization from the claims administrator before treatment. WC claims also require using specific billing forms (RFA — Request for Authorization) for treatments beyond the Medical Treatment Utilization Schedule (MTUS). Workers' comp orthopedic billing is significantly different from commercial insurance billing and requires specific expertise — errors in WC billing are common and costly.

Yes. California commercial insurers and Medi-Cal managed care plans all have their own prior authorization requirements, but California law imposes specific timelines and transparency requirements on them. Under AB 1103 (effective 2022), health plans in California must process standard prior authorization requests within 5 business days and expedited requests within 72 hours. Denials must include the specific clinical criteria used and the specific clinical reasons for the denial. For orthopedic procedures, common prior auth requirements include joint replacements, spine surgeries, arthroscopic procedures, and many injection series. Always verify specific payer requirements — prior auth lists change frequently and getting it wrong is expensive.

The DMHC (Department of Managed Health Care) Help Center is a free resource for California patients who are having problems with their HMO, PPO, or managed care plan. Their contact number is 1-888-466-2219. The Help Center can: help you understand your rights as a patient, assist with filing a complaint against your health plan, initiate the IMR process for denied medical treatments, investigate whether your plan is following California's insurance laws, and issue fines to health plans that violate the law. For orthopedic billing disputes — denied procedures, delayed claims, improper prior auth denials — the DMHC is one of the most effective resources available to California patients. Most complaints are resolved within 30 days.

Yes, Florida Medicaid covers medically necessary orthopedic procedures, but prior authorization is required for most elective orthopedic surgeries. Florida Medicaid is largely delivered through managed care plans (Florida Medicaid Managed Medical Assistance — MMA program) through plans like Staywell, Humana, Molina, and others. Each managed care plan has its own prior authorization requirements and formularies on top of base Florida Medicaid coverage. Reimbursement rates are generally lower than commercial payers. Providers must enroll specifically as Florida Medicaid providers and ensure their NPI is registered before billing. The Florida Medicaid Provider General Handbook and specialty-specific handbooks govern billing requirements.

Florida patients have strong rights under the Florida Patient's Bill of Rights and Responsibilities, as well as federal ACA protections. When a claim is denied, Florida patients have the right to: a written denial with the specific reason, an internal appeal process, an expedited appeal (within 72 hours) for urgent medical situations, and an external appeal through an independent review organization. Florida's Office of Insurance Regulation (OIR) oversees commercial health insurers. For HMO plans, the Agency for Health Care Administration (AHCA) handles complaints. Florida also has specific prompt pay laws requiring insurers to pay clean claims within 20 days for electronic submissions and 40 days for paper submissions — among the fastest in the country.

Florida has strict prompt payment laws. Under Florida Statute 627.6131, commercial insurers must pay or deny clean electronically submitted claims within 20 days of receipt. For paper claims, the deadline is 40 days. HMO plans under Florida Statute 641.3155 must pay clean claims within 35 days. If these deadlines are missed, insurers owe interest — 10% per year on the unpaid amount for HMOs and 12% per year for commercial insurers. These are among the strictest prompt pay laws in the country. For orthopedic practices, tracking submission dates and payment dates and filing complaints when deadlines are missed is worth doing — the interest payments add up.

Yes. Florida enacted SB 1222 effective July 1, 2016 — one of the earlier state-level surprise billing laws. It protects patients from balance billing by out-of-network providers at in-network facilities in non-emergency situations where the patient did not knowingly and voluntarily consent to out-of-network care. The federal No Surprises Act (2022) then provided additional nationwide protections that apply in Florida as well. For orthopedic patients in Florida, this means you should not receive surprise out-of-network bills from providers you did not choose — such as an anesthesiologist or surgical assistant at an in-network orthopedic facility — without prior written notice and consent.

Florida's external review process (similar to California's IMR) allows patients to have a denied claim reviewed by an independent organization outside of the insurance company. For most Florida health plans, after an internal appeal is denied, patients can request an external review managed by an independent review organization (IRO) certified by the state. The request must typically be filed within 60 days of the final internal appeal denial. The IRO's decision is binding on the health plan. For HMO plan disputes, patients file with the Florida AHCA. For commercial insurer disputes, file with the Florida OIR at floir.com or call 1-877-693-5236. This is a free process and is particularly effective for medical necessity denials on orthopedic procedures.

Florida Workers' Compensation (WC) covers medical treatment for work-related orthopedic injuries — including fractures, back injuries, repetitive strain injuries, and joint conditions. Florida WC uses the Florida Workers' Compensation Health Care Provider Reimbursement Manual, which sets specific fee schedules for orthopedic procedures. For WC billing, providers must be authorized by the employer or insurer before providing non-emergency treatment. The Uniform Medical Treatment/Status Report forms must be used for reporting. WC orthopedic billing in Florida requires specific knowledge of the state's fee schedule, authorization requirements, and reporting obligations. Errors in Florida WC billing are common and claims are frequently audited by the Division of Workers' Compensation.

The process depends on your plan type. For commercial health insurance: contact the Florida Office of Insurance Regulation (OIR) at floir.com or call 1-877-693-5236. For HMO plans: contact the Agency for Health Care Administration (AHCA) at ahca.myflorida.com or call 1-888-419-3456. For Medicare Advantage plans: contact your State Health Insurance Assistance Program (SHIP) at 1-800-963-5337. For Medicaid managed care plans: contact the Florida AHCA Medicaid program. When filing a complaint, include copies of your denial letter, EOB, internal appeal decision, and any documentation you submitted. Florida regulators actively investigate complaints and have the authority to require insurers to reconsider denials and pay penalties for improper handling.