Orthopedic billing is defined by 90-day global packages, complex multi-procedure rules for arthroscopic and joint procedures, fracture care documentation, and laterality modifiers—all within a specialty where even minor coding errors compound across high-volume surgical caseloads. VeriMedix brings the coding depth and denial management precision orthopedic practices require.
Orthopedic surgery generates some of the highest-complexity billing scenarios in outpatient medicine. Most major procedures carry a 90-day global surgical period, meaning all related follow-up care—office visits, splint changes, physical therapy referrals managed by the surgeon—is bundled into the surgical fee. At the same time, orthopedics is distinguished by its high volume of same-day E/M and procedure combinations (a patient presenting with knee pain who receives a corticosteroid injection), requiring disciplined application of modifier -25 to capture the evaluation separately from the procedure. The orthopedic coder must master the interplay between the global period, modifier -25, and NCCI bundling edits to avoid leaving revenue on the table or creating compliance exposure.
Fracture care billing presents unique challenges. When a physician treats a fracture, they may bill the fracture care CPT code only if they assume responsibility for the care of the fracture—including all follow-up visits during the global period. If the patient is referred to the orthopedist after initial ER treatment by another provider, the orthopedist bills fracture care if they provide definitive treatment. If only evaluation is provided without active fracture management, an E/M code is appropriate. The correct fracture care CPT depends on which bone is involved, whether treatment is closed versus open, and whether internal or external fixation is used. Pathologic fractures, stress fractures, and traumatic fractures have distinct ICD-10 coding conventions.
Durable medical equipment (DME) is a significant revenue stream in orthopedics. Casting, splinting, and prefabricated orthosis supply codes are billed via HCPCS Level II codes (L-codes for orthoses, A-codes for supplies). When the physician practice supplies and dispenses DME, the practice must be enrolled as a DME supplier (DMEPOS) with Medicare. Many practices avoid this by directing patients to an independent DME supplier, but others maintain DMEPOS status to capture that revenue. Laterality modifiers (RT, LT) and bilateral modifier (-50) are required on most extremity procedure and DME codes—their absence is a frequent cause of claim rejection in orthopedics.
Below are commonly billed codes our certified coders manage for orthopedics practices. Always confirm payer-specific coverage and current code values.
| Code | Description | Billing note |
|---|---|---|
27447 | Total knee arthroplasty (TKA) | 90-day global; very high RVU; requires prior auth; document laterality (RT/LT); common ASC migration target |
29881 | Arthroscopy, knee; with meniscectomy (medial or lateral, including any meniscal shaving) | 90-day global; NCCI bundles many knee arthroscopy codes together—review before billing multiple knee arthroscopy CPTs same session |
27130 | Arthroplasty, acetabular and proximal femoral prosthetic replacement (total hip arthroplasty) | 90-day global; high implant cost—document prosthetic device on claim for pass-through if applicable |
24600 | Treatment of closed fracture, radial head or neck; without manipulation | Fracture care; 90-day global; physician assumes fracture management responsibility; do not bill E/M for routine follow-up in global period |
20610 | Arthrocentesis, aspiration and/or injection, major joint or bursa (knee, hip) | 0-day global; bill with modifier -25 for E/M on same day; laterality required (RT or LT) |
99213 | Office or other outpatient visit, established patient, moderate complexity | Add modifier -24 for E/M during global period for unrelated problem; modifier -25 for same-day procedure E/M |
73721 | MRI, any joint of lower extremity without contrast | Professional component (-26) if ordered by ortho and read by radiologist; can be global if performed in office setting with in-house MRI |
L1833 | Knee orthosis (KO), with rigid knee joint(s), positional orthosis (HCPCS DME) | Requires DMEPOS supplier enrollment; document medical necessity; Certificate of Medical Necessity (CMN) may be required |
Our standard operating procedures for orthopedics revenue cycle management — the step-by-step workflow we follow on every claim:
These are the issues we see most often in orthopedics billing — and exactly how we resolve them:
Orthopedic offices frequently perform injections, joint aspirations, or minor procedures during office visits. Without modifier -25 on the E/M, payers bundle the visit into the procedure payment. Fix: implement a workflow rule that every visit with a same-day procedure automatically triggers review for -25 applicability and ensures the office note documents a separately identifiable evaluation.
Billing routine post-operative follow-up visits during the 90-day global period results in denials and potential overpayment audits. Fix: configure your PM system to flag all claims from the same surgeon/patient pair that fall within the calculated global period end date and require manual review before submission.
Orthopedic procedure claims without RT/LT modifiers are rejected by most payers, and bilateral claims without -50 or duplicate line items result in underpayment. Fix: build a mandatory laterality modifier prompt into your billing system for all extremity procedure codes.
Multiple arthroscopic knee procedures performed in the same session (e.g., meniscectomy + chondroplasty + synovectomy) are subject to NCCI column 1/column 2 bundling. Billing without review leads to denial of the lesser-valued codes. Fix: run all knee arthroscopy multi-procedure claims through NCCI check before submission; apply -59 only where genuinely separate interventions are documented.
When a patient presents with a fracture that was initially treated in the ER, and the orthopedist only evaluates without providing definitive treatment, the correct charge is an E/M—not fracture care. Billing fracture care incorrectly inflates claims and triggers audits. Fix: educate coders on the definition of 'fracture management' and require documentation that explicitly states whether the physician is assuming fracture care responsibility.
Verimedix works inside the systems orthopedics practices already use, including:
The global period includes the day of surgery, all related post-op visits for normal recovery during the 90 days, removal of sutures/casts, and any services related to the surgery. Excluded: unrelated medical conditions (bill with -24), treatment of complications requiring a return to the OR (-78), and new injuries or problems unrelated to the surgical diagnosis.
Casting and splinting application is included in fracture care CPT codes. If casting is performed as a standalone service, use CPT codes in the 29000–29799 series for the application. Supply codes (A4570 for splint, A6457 for fiberglass casting tape) are separately billable under DME codes if the practice has DMEPOS enrollment.
Modifier -25 is used when a minor procedure (0- or 10-day global) is performed on the same day as an E/M. Modifier -57 is used when an E/M results in the decision to perform a major procedure (90-day global). These modifiers are not interchangeable—using -25 instead of -57 for a major surgery decision is a common error that can trigger audit.
Yes. If the practice owns the X-ray equipment and performs the radiograph in-office, bill the global code (interpretation + technical component). If the X-ray is taken elsewhere and the orthopedist only interprets, bill with modifier -26. Codes 73030 (shoulder), 73060 (humerus), 73100 (wrist), 73562 (knee) are commonly used in orthopedics.
Ultrasound-guided joint injections require both the injection code (20610 for major joint) and the imaging guidance code (76942). The -26 modifier applies to 76942 if the practice provides interpretation only. Apply modifier -25 if an E/M was also performed at the same visit.
Medicare requires a detailed written order from the physician and, for some items, a Certificate of Medical Necessity (CMN). The physician's record must document the medical necessity—diagnosis, clinical findings, and why the device is needed. For custom orthotics (L-codes), additional documentation of the cast/molding process may be required.
Verimedix handles the entire orthopedics revenue cycle — coding, submission, denials, and A/R — so your team can focus on patients.