CPT Code 23605: Proximal Humeral Fracture with Manipulation

Key takeaways

CPT code 23605 describes closed treatment of a proximal humeral surgical or anatomical neck fracture with manipulation.

Use CPT 23605 only when manipulation was performed, and use CPT 23600 for closed treatment without it.

Always append a laterality modifier and document the fracture location, the manipulation technique, and any traction used.

Medicare pays about $535 for 23605 in a physician office in 2026 and about $441 in a facility.

Pabau’s claims management software helps orthopedic practices submit and track CPT 23605 claims in one place.

CPT code 23605 is the procedure code for closed treatment of a proximal humeral fracture at the surgical or anatomical neck, with manipulation. The provider reduces the fracture by hand, without opening the site.

The code carries a 90-day global period and pays about $535 in a physician office under the 2026 Medicare fee schedule. This guide shows the RVU arithmetic behind that figure, so you can reproduce it for your own locality.

What is CPT code 23605?

CPT code 23605 sits in the Musculoskeletal System section of the CPT code set, in the Shoulder subsection, under Fracture and/or Dislocation. The American Medical Association maintains the code set. Its official descriptor reads:

Closed treatment of proximal humeral (surgical or anatomical neck) fracture; with manipulation, with or without skeletal traction.

The procedure means manually reducing a displaced fracture at the proximal humerus without an open surgical incision. Skeletal traction may or may not accompany the manipulation, and both scenarios bill under the same code.

• Code system: CPT (Current Procedural Terminology)
• Section: Musculoskeletal System
• Subsection: Shoulder
• Category: Fracture and/or Dislocation
• Status: Active in the current CPT code set, per the NIH Value Set Authority Center

CPT 23605 vs CPT 23600: Key differences

The single clinical variable separating these two codes is whether the provider performed manipulation. Both describe closed treatment of the same fracture site. Upcoding 23600 to 23605 when no manipulation occurred is one of the most cited orthopedic billing errors.

If the fracture needs an open approach, move to CPT 23615 or 23616. 23615 covers open treatment with internal fixation. 23616 adds a proximal humeral prosthetic replacement, which is the only thing separating the two.

When to report CPT 23605

Three conditions must all be true before you report CPT code 23605. A fourth detail, skeletal traction, does not change the code but still belongs in the note.

• Fracture site: The fracture involves the proximal humerus at the surgical or anatomical neck. A greater tuberosity fracture alone codes differently.
• Treatment type: The approach is closed, with no incision and no direct visualization of the bone. An open approach moves you to CPT 23615 or 23616.
• Manipulation performed: The provider physically reduced the fracture with manual force or instrument-assisted manipulation. Immobilization without reduction is CPT 23600.
• Skeletal traction: The code covers both. Document traction if it was used, because omitting it can prompt a medical necessity query.

Standardizing medical forms across an orthopedic practice makes it easier to capture these details consistently at the point of care.

Documentation requirements

A clean 23605 claim rests on a procedure note that substantiates every element of the descriptor. Auditors reviewing orthopedic claims look for these specific items:

• Fracture location: Explicitly name the surgical neck or anatomical neck of the proximal humerus.
• Laterality: Document which shoulder was treated, so the LT or RT modifier is supported.
• Treatment modality: State clearly that treatment was closed, with no surgical incision.
• Manipulation technique: Name the reduction maneuver, such as traction-countertraction or Kocher.
• Skeletal traction: If applied, document type, duration, and rationale. If not, a brief note prevents ambiguity.
• Imaging confirmation: Reference the pre- and post-reduction radiographs that confirm fracture position.
• Fracture classification: Neer classification or an equivalent supports medical necessity.

Practices using digital clinical forms can build these checkpoints into orthopedic procedure templates, so nothing is missed before the note is signed.

Modifiers that apply to 23605

Modifiers on CPT code 23605 affect both claim acceptance and reimbursement. Laterality modifiers are mandatory and the others are situational. Confirm modifier policy with the payer before submission, because modifier 59 rules in particular vary.

Missing the LT or RT modifier is the most common rejection trigger for 23605.

ICD-10 codes that pair with 23605

Pairing CPT code 23605 with an appropriate ICD-10-CM diagnosis code is required for medical necessity. The S42 codes below are the ones most often cross-referenced with it. Verify against the current tables, which update each October. In physical therapy EMR workflows, pairings like these are everyday decisions.

The seventh character A designates the initial encounter. Use D for subsequent encounters and S for sequela. Using the wrong encounter character is a frequent edit trigger on orthopedic claims. Growth-plate fractures of the humerus fall in the S49 block instead, where codes such as S49.032D and S49.102G carry their own seventh-character rules.

Relative value units for 23605

RVU values for CPT code 23605 come from the CMS Medicare Physician Fee Schedule relative value file and are updated annually. The figures below are the 2026 national values, before any geographic adjustment. The FastRVU 2026 lookup reproduces them alongside the payment calculation.

Multiply the total RVU by the CMS conversion factor to reach the national payment. The CY2026 conversion factor is $33.4009 for clinicians who are not qualifying APM participants. Qualifying participants are paid on a slightly higher factor of $33.5675. That puts 23605 at roughly $535 in the office and $441 in a facility.

2026 Medicare reimbursement rates

Medicare payment for CPT code 23605 varies by place of service and MAC locality. Facility rates apply in a hospital or ambulatory surgery center. Non-facility rates apply in a physician office. Check the CMS MPFS lookup before using any figure for contract negotiations.

Facility vs non-facility billing

Place of service drives the difference, and it comes entirely from the practice expense RVU. The non-facility rate is higher because the physician absorbs the overhead directly. The facility rate is lower because the facility bills separately for that overhead.

Both figures are national averages before geographic adjustment. Actual payment follows the GPCI for the state or region where the service is rendered.

Geographic payment adjustments

CMS applies three separate GPCI values, one each for work, practice expense, and malpractice, by MAC locality. High-cost areas such as Manhattan, San Francisco, and Alaska carry GPCIs above 1.0. Rural MAC localities typically fall below 1.0. Practices billing CPT code 23605 across several states should run a locality-specific calculation rather than applying one national rate.

NCCI edits and bundling rules

The National Correct Coding Initiative publishes edit pairs that determine which codes cannot be billed together on the same date without a modifier. NCCI edits are updated quarterly by CMS. Check the current edit table before unbundling anything from 23605.

• Bundled services typically included: Application of cast or strapping, which is generally not billable separately when it falls inside the fracture treatment global period.
• Modifier 59 exception: A second, distinctly separate procedure on the same date may take modifier 59, or the appropriate XS, XP, XE, or XU modifier. Documentation must show a different session or a different anatomic site.
• Common bundling trigger: A separate E/M service on the same date needs modifier 25 on the E/M code. Without it, the E/M is a frequent denial.

Global period and what it covers

CMS assigns CPT code 23605 a 90-day global surgical package. The allowed payment covers pre-operative services on the day of the procedure, the procedure itself, and related post-operative care for 90 days.

• Included in the global period: Routine post-op visits related to fracture management, cast checks, and post-reduction imaging reviews tied to the procedure.
• Not included: An unrelated new injury or condition, complications needing a return to the OR, and services by a different physician.
• Billing during the global period: Append modifier 24 for an unrelated E/M service or modifier 79 for an unrelated procedure. Without the right modifier, the claim bundles into the global payment automatically.
• Global period confirmation: Verify the current CMS global period indicator for 23605 in the MPFS database, since values change with annual rule updates.

Practices with a high fracture volume can track the 90-day window inside sports medicine software so post-operative encounters are coded correctly. Physical therapy that follows the reduction is billed separately by the treating therapist, under codes such as 97161.

Common billing errors

Four errors account for most CPT code 23605 denials and audit findings. All four are preventable with a pre-submission review built into everyday private practice management.

Reading the AAPC CPT lookup alongside the operative note before submission catches code-descriptor mismatches before the claim reaches the payer.

How Pabau supports orthopedic claim submission

Orthopedic billing runs through a chain of hand-offs. The procedure note has to capture the clinical detail and the coder has to pick the code. The claim then has to reach the payer with the modifier attached. A break anywhere in that chain delays payment.

Practice management software like Pabau keeps the clinical record and the billing record in the same place. Pabau’s claims management software submits claims and tracks what the payer does with them, so your team can see which 23605 claims are still open. It reports on status rather than validating your code choice, which stays with the coder and the clinician.

Practices handling musculoskeletal procedures can build orthopedic procedure templates in Pabau that prompt for laterality, treatment method, and traction at the point of care. That is one of the practice management software features orthopedic groups lean on to cut coding rework.

The platform also supports multi-provider workflows, which matters when the treating physician and the billing team work in different systems. For a wider view of what integrated tools deliver, compare medical practice management software built for procedure-heavy specialties.

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Conclusion

The billing outcome for 23605 is decided in the procedure note, not in the billing system. If the note names the fracture site, the side, the closed approach, and the reduction maneuver, the code selects itself.

The trade-off worth remembering is the 90-day global period. Every post-operative encounter in that window is either included in the original payment or needs modifier 24, 25, or 79. Practices that settle this at the point of care recover far more than those that argue it after a denial.

Pabau gives orthopedic and musculoskeletal practices one place to submit claims and follow what happens to them next. Book a demo to see how Pabau handles orthopedic billing workflows end to end.

Continue your research

Coding a growth-plate fracture of the humerus? S49.032D covers the Salter-Harris Type III descriptor and the encounter characters that go with it.

Billing the elbow rather than the shoulder? 24138 works through sequestrectomy of the olecranon process and what the note has to show.

Reporting the therapy evaluation that follows a reduction? 97161 explains the low complexity evaluation and how its level is decided.

Documenting a shoulder examination properly? O’Brien’s test covers how to perform the maneuver and how to read the result.

Assessing posterior shoulder instability? Kim test shows how to perform it, interpret it, and record the finding.

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