Orthopedics billing
Orthopedics billing sits at the intersection of surgical global-period rules, supply and DME coding, imaging, and non-standard payers. This resource explains, in general terms, why an orthopedic revenue cycle behaves differently from a purely office-based specialty and where the recurring failure points tend to be.
- Surgical global periods and the 24/25/57/58/78/79 modifier family
- Fracture care billed as a global package versus itemized visits
- Casting, splinting, DME, in-office imaging, and injection supplies
- Workers-compensation and auto or liability payers with their own rules
This is an educational guide to how billing works for orthopedics — its workflow, coding, and payer considerations. It is general information, not a statement that US Medical Billing serves this specialty, and not billing, coding, or legal advice.
What makes orthopedics billing distinct
Orthopedic practices combine evaluation-and-management visits, minor and major surgical procedures, fracture and dislocation care, diagnostic imaging, injections, and durable medical equipment. Many of these services carry a global surgical period, which bundles the procedure with related preoperative and postoperative care for a defined number of days. Deciding what falls inside a global package and what is separately reportable is a central, recurring judgment in this specialty.
The work also spans multiple sites of service. A single episode may include an office E/M visit, an in-office or hospital procedure, imaging with professional and technical components, and a brace or splint dispensed at the point of care. Each of those elements has its own coding, modifier, and documentation requirements, and the place-of-service reported on the claim must match where the service actually occurred.
Finally, orthopedics frequently involves payers that are not standard commercial or Medicare plans. Workers-compensation and auto or liability claims arrive with their own authorization, fee-schedule, and documentation expectations, and treating them like ordinary health-insurance claims is a common source of delay and underpayment.
How orthopedics billing flows
The stages below trace a typical orthopedic episode from access through follow-up. The exact steps vary by practice and payer, but the sequence highlights where specialty-specific decisions are made.
Access, referral, and prior authorization
Advanced imaging such as MRI, many surgical procedures, some injections, and much durable medical equipment commonly require prior authorization. Capturing the referral, the correct planned procedure codes, and the authorization before the service prevents avoidable administrative denials.
Common operational challenges
These are structural features of orthopedic billing that tend to create rework when they are not managed deliberately.
Global-period judgment
Many procedures include a global surgical package covering related follow-up care for a set number of days. Distinguishing routine postoperative visits, which are bundled, from separately reportable services is a repeated, documentation-dependent decision.
Supply and DME complexity
Casting and splinting supplies, orthotic and prosthetic devices, and braces are coded and reimbursed under their own rules. DME in particular can require supplier standards, separate authorization, and specific HCPCS codes rather than being treated as an incidental supply.
Non-standard payers
Workers-compensation and auto or liability claims follow state or contract-specific fee schedules and documentation rules, often move more slowly, and cannot be worked with the same assumptions as commercial or Medicare claims.
Multi-component services in one visit
A single encounter may pair an E/M service with a procedure, an injection, imaging, and a dispensed device. Each needs correct modifiers and place-of-service coding, and improper combinations trigger bundling edits.
Documentation and coding considerations
Accurate orthopedic coding depends on documentation that supports the specific service, its laterality and site, and its relationship to any prior procedure.
Global-period modifiers
The modifier family that governs services around a global period includes 24 for an unrelated E/M during a postoperative period, 25 for a significant, separately identifiable E/M on the day of a procedure, 57 for the decision-for-surgery visit, 58 for a staged or related procedure, 78 for an unplanned return to the operating room for a related procedure, and 79 for an unrelated procedure during the postoperative period.
Fracture care: global versus itemized
Fracture and dislocation treatment can be reported using a fracture-care code that carries its own global package for restorative treatment and routine follow-up, or, in some situations, as an E/M visit with separate casting, splinting, or supply codes. Choosing the correct approach depends on the treatment actually rendered and the documentation.
Casting, splinting, and supplies
Cast and splint application has its own procedure codes, and the casting or splinting materials are reported separately with HCPCS supply codes. Documentation should support the application, the material used, and the anatomic site.
Imaging and injection details
In-office radiographs involve professional and technical component distinctions handled with the 26 and TC modifiers when applicable. Joint injections and aspirations pair a procedure code with the injectable drug's HCPCS or J-code and, where relevant, imaging-guidance coding, with attention to NCCI edits.
Denial and rejection risks
The denial patterns below recur across orthopedic practices and are largely preventable at the front end and in coding.
Global-period bundling
Services provided during a global period are denied as bundled when a supporting modifier is missing or when documentation does not establish that the service was unrelated, staged, or separately identifiable.
Missing or mismatched authorization
Advanced imaging, surgery, DME, and some injections are frequent authorization triggers. A missing authorization, or one that does not match the procedure actually performed, leads to administrative denials that are difficult to overturn after the fact.
Modifier and NCCI edits
Incorrect use of modifiers such as those distinguishing separate procedures, along with National Correct Coding Initiative edits, drives denials when multiple procedures, an E/M with a procedure, or an injection with guidance are reported together.
Wrong payer or process
Sending a work-related or accident-related injury to the patient's health plan, or omitting a claim number and supporting records on a workers-compensation or liability claim, results in rejections and rework.
Payer-process considerations
Orthopedics interacts with more payer types than many specialties, and each brings distinct process expectations.
Commercial and Medicare rules
Standard plans apply the physician fee schedule, global-surgery policy, and correct-coding edits. Understanding how a given payer defines global periods and bundling is essential to expecting the right payment.
Workers-compensation
Workers-compensation claims typically follow state-specific fee schedules and documentation requirements, generally carry no patient cost-sharing, and often require an adjuster contact, a claim number, and supporting records. Submission and appeal routes can differ from standard electronic claims.
Auto and liability payers
Motor-vehicle and other liability claims may involve personal-injury-protection benefits, third-party liability, liens, or letters of protection. These arrangements affect who pays, when, and what documentation must accompany the claim.
DME and supplier processes
Durable medical equipment dispensed in the practice can involve separate supplier standards, authorization, and coding pathways distinct from professional services, and may be adjudicated under a different benefit.
Revenue-cycle checkpoints
These are practical points in an orthopedic revenue cycle where a brief verification prevents a downstream denial.
- Confirm prior authorization for imaging, surgery, DME, and injections before the service, and confirm it matches the planned procedure.
- Determine early whether an injury is work-related or accident-related so the claim routes to the correct payer and process.
- Verify that global-period status and any 24/25/57/58/78/79 modifier are supported by the documentation before the claim goes out.
- Check that fracture-care coding reflects the treatment actually rendered, whether billed as a global package or as itemized visits with supplies.
- Capture casting and splinting supplies, injectable drugs, and imaging components with the correct HCPCS and modifier detail.
- Confirm place of service and units match where and how each service was delivered before submission.
Related & connected
Services, tools, and background reading connected to the topics on this page.
Related services
- Coding supportProcedure, modifier, and diagnosis coding for surgical, fracture-care, imaging, and injection services.
- Denial managementWorking global-period, authorization, and modifier denials, including longer workers-compensation and liability cycles.
- Eligibility verificationConfirming benefits and identifying work-related or accident-related claims before services are rendered.
Calculators & tools
- Denial rate calculatorEstimate the share of claims denied to gauge exposure from bundling and authorization issues.
- Clean claim rate calculatorMeasure how often claims pass on first submission, a useful signal for modifier and coding accuracy.
- Days in AR calculatorTrack how long receivables stay open, which non-standard payers tend to lengthen.
From the Knowledge Base
Frequently asked questions
What is a global surgical period in orthopedics?
A global surgical period is a defined window around a procedure during which related preoperative and postoperative care is bundled into the procedure's payment. Services that are unrelated, staged, or significantly separate can still be reported, but only with the appropriate modifier and supporting documentation.
When is fracture care billed globally versus itemized?
Fracture-care codes include a global package covering restorative treatment and routine follow-up, which is appropriate when the practice manages that care. In other situations an E/M visit with separate casting, splinting, or supply codes may fit better. The correct choice depends on the treatment actually rendered and what the documentation supports.
Why are workers-compensation claims handled differently?
Workers-compensation claims generally follow state-specific fee schedules and documentation rules, usually involve no patient cost-sharing, and often require a claim number, an adjuster contact, and supporting records. Their submission and appeal processes can differ from standard commercial or Medicare claims, so they are worked as a distinct track.
Which modifiers matter most around procedures in orthopedics?
The global-period modifiers are central: 24 and 79 for unrelated postoperative services, 25 for a separately identifiable same-day E/M, 57 for the decision-for-surgery visit, 58 for staged or related procedures, and 78 for an unplanned related return to the operating room. Correct-coding edits also make separate-procedure modifiers important when multiple services occur together.
Sources
Last reviewed July 17, 2026.
- Centers for Medicare & Medicaid Services (CMS)Physician fee schedule and global surgery payment policy
- Centers for Medicare & Medicaid Services (CMS)Durable medical equipment coverage and supplier standards
- HHS Office of Inspector General (OIG)Provider compliance guidance on coding and billing accuracy
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