Soft tissue repair · General

12037

Intermediate repair of wounds on the scalp, axillae, trunk, or extremities (excluding hands and feet) exceeding 30.0 cm in total length, requiring layered closure of subcutaneous tissue and/or superficial fascia in addition to skin closure.

Verified May 8, 2026 · 9 sources ↓

Medicare
$536.08
Total RVUs
16.05
Global, days
10
Region
General
Drawn from CMSAAPCMdclarityAaomsFindacode

Documentation requirements

What must appear in the operative or office note to support the claim.

Source · Editorial brief grounded in 9 cited references ↓

  • Exact wound length recorded in centimeters — not 'large' or 'extensive'
  • Anatomic location specified within the eligible grouping (scalp, axillae, trunk, or extremity excluding hand and foot)
  • Explicit description of layered closure technique documenting closure of subcutaneous tissue and/or superficial fascia in addition to skin
  • If multiple wounds are summed to reach >30.0 cm, each wound length and location must be individually documented
  • Wound contamination status and any debridement or irrigation performed prior to closure
  • Mechanism of injury or clinical indication supporting the need for intermediate rather than simple repair

Applicable modifiers

Modifiers commonly billed with this code.

Source · AMA CPT modifier descriptors · CMS NCCI Policy Manual

22 Increased complexity 25 Significant separate E/M 51 Multiple procedures 52 Reduced services 59 Distinct service 76 Repeat, same physician 77 Repeat, another physician 78 Unplanned return — related 79 Unrelated during global LT Left side RT Right side

What this code covers

Source · Editorial summary grounded in 9 cited references ↓

CPT 12037 is the top-tier code in the 12031–12037 intermediate repair series, covering wounds of the scalp, axillae, trunk, and extremities (hands and feet excluded) with a measured length greater than 30.0 cm. Intermediate repair means the closure involves at least one deeper layer — subcutaneous tissue or superficial (non-muscle) fascia — in addition to the skin. Simple closure of the skin surface alone doesn't qualify; if the operative note doesn't describe layered closure, expect a downcode to the simple repair series.

Code selection within this series is driven by three variables: repair complexity (intermediate vs. simple vs. complex), anatomic location, and measured wound length in centimeters. When multiple wounds on the same anatomic grouping are repaired at the same session, add the lengths together and report a single code for the sum. Wounds from different anatomic categories are coded separately. 12037 carries a 10-day global period, so minor post-op wound checks within that window are bundled — bill an E/M in the global only if it addresses a separate, unrelated problem (modifier 24).

This code appears most often in orthopedic and trauma contexts — large-area degloving injuries, extensive surgical site closures following fasciotomy, or traumatic lacerations covering a significant portion of an extremity or trunk. Because the wound length threshold is high (>30.0 cm), documentation must include a precise centimeter measurement. A vague narrative like 'large wound closed in layers' without a numeric length is the most common audit flag and the fastest path to a denial.

RVU & reimbursement

Component RVUs and Medicare national rate. Actual payment varies by GPCI locality.

Source · CMS Physician Fee Schedule, RVU26A · January 2026

Work RVU4.88
Practice expense RVU10.1
Malpractice RVU1.07
Total RVU16.05
Medicare national rate$536.08
Global period10 days

Payment by site of service

Medicare pays different rates by setting. HOPD typically pays substantially more than ASC for the same procedure.

Source · CMS OPPS Addendum B·ASC HCPCS payment rates·2026

SettingMedicare rate (national)
Office (PFS non-facility)
Procedure performed in physician's office
$536.08
HOPD (APC 5054)
Hospital outpatient department
$2,107.97
ASC (PI A2)
Ambulatory surgical center (freestanding)
$1,128.57

Common denial reasons

The recurring reasons claims for CPT 12037 get rejected.

Source · Editorial brief grounded in CMS NCCI edits, AAOS coding appeals, and cited references ↓

  • Missing or non-numeric wound length measurement — 'large wound' without centimeters triggers automatic downcode or denial
  • Operative note describes skin-only closure, failing to document the deeper layered closure required for intermediate classification
  • Wound location documented in hands or feet, which are excluded from the 12031–12037 series and belong in 12041–12047
  • Multiple wounds from different anatomic categories combined into a single 12037 instead of being billed separately by category
  • E/M billed during the 10-day global period without modifier 24 to indicate an unrelated presenting problem

Frequently asked questions

Source · Generated from the editorial pipeline, verified against 9 cited references ↓

01Can I add wound lengths together to reach the >30.0 cm threshold for 12037?
Yes — but only when the wounds are in the same anatomic category (scalp, axillae, trunk, or extremities excluding hands and feet). Sum those lengths, report one code for the total. Wounds in a different anatomic grouping must be billed on a separate line with their own code.
02What separates intermediate repair (12037) from complex repair (13100 series)?
Complex repair involves more than layered closure — it requires one or more of the following: scar revision, debridement beyond wound edges, extensive undermining, retention sutures, or repair of a traumatic avulsion or tissue defect. If the operative note only describes layered closure of subcutaneous tissue and skin, that's intermediate, not complex.
03Does 12037 include local anesthesia?
Yes. Local or topical anesthesia administered at the repair site is bundled into wound repair codes. Don't bill a separate injection code for the anesthetic used to numb the wound.
04How does the 10-day global period affect same-day E/M billing?
If you perform an E/M on the same day as the repair and it's a significant, separately identifiable service — for example, evaluating a separate complaint — append modifier 25 to the E/M. Post-op visits during the 10-day global for wound checks are bundled. An E/M for an unrelated problem within the global period needs modifier 24.
05When should I use modifier 22 with 12037?
Use modifier 22 when the work is substantially greater than the typical >30.0 cm intermediate repair — for example, heavily contaminated wounds requiring extensive irrigation, or repairs with unusual anatomic complexity. Attach a written narrative explaining the additional time and effort; without it, payers will strip the modifier and pay at the base rate.
06Are hands and feet ever billable under 12037?
No. Wounds of the hands and feet fall under the 12041–12047 series regardless of length. Billing 12037 for a hand or foot wound will be denied or downcoded on audit. Verify the location before code selection.
07Can 12037 be billed with a fracture repair code on the same day?
Yes, if the wound repair is separate and distinct from the surgical incision used for the fracture fixation. The repair must be at a different anatomic site or a traumatic wound unrelated to the operative approach. Use modifier 59 (or an X modifier) to indicate the distinct service, and document the separate wound clearly in the operative note.

Sources & references

Editorial content was developed using the following public sources. Last verified May 8, 2026.

  1. 01CMS Physician Fee Schedule 2026
  2. 02
    aapc.com
    https://www.aapc.com/codes/cpt-codes/12037
  3. 03
    aapc.com
    https://www.aapc.com/blog/26267-closure-coding-made-simple/
  4. 04
    mdclarity.com
    https://www.mdclarity.com/cpt-code/12037
  5. 05
    cms.gov
    https://www.cms.gov/files/document/2025nccimedicarepolicymanualcompletepdf.pdf
  6. 06
    cms.gov
    https://www.cms.gov/files/document/08-chapter8-ncci-medicare-policy-manual-2026-final.pdf
  7. 07
    aaoms.org
    https://aaoms.org/wp-content/uploads/2024/04/Trauma_CodingPaper.pdf
  8. 08
    findacode.com
    https://www.findacode.com/cpt/12037-cpt-code.html
  9. 09
    hcmsus.com
    https://hcmsus.com/blog/laceration-repair-cpt-codes

Mira AI Scribe

Mira's AI scribe captures wound length in centimeters directly from dictation, anatomic site within the eligible grouping, and the specific layers closed — subcutaneous tissue, superficial fascia, and skin. It flags notes that describe closure without a numeric measurement or that mention hands or feet as the repair site, preventing downcodes to simple repair or misrouting to the 12041–12047 series before the claim is submitted.

See how Mira captures CPT 12037 documentation

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