Wound debridement is one of the most frequently coded procedures in wound care centers, outpatient clinics, and hospital settings — and one of the most frequently coded *wrong*. Code selection depends on three things: the method used, the deepest tissue actually removed, and the total surface area treated. This guide covers the code families, wound-size calculation, global periods, and the edits behind most denials.
Short Answer — CPT Codes for Wound Debridement
Debridement codes fall into three families:
- Selective debridement — 97597 (first 20 sq cm or less) and add-on +97598 (each additional 20 sq cm): sharp removal of devitalized skin only.
- Non-selective debridement — 97602: removal of devitalized tissue by wet-to-moist dressings, enzymatic agents, abrasion, or whirlpool, reported per session.
- Surgical (excisional) debridement — 11042–11047, selected by the deepest tissue removed: 11042 subcutaneous, 11043 muscle/fascia, 11044 bone, with add-on codes +11045, +11046, and +11047 for each additional 20 sq cm.
The governing rule: code the deepest tissue actually removed, not the depth of the wound itself. A deep wound from which only subcutaneous tissue was removed is coded 11042, not 11044.
Selective vs Non-Selective vs Surgical Debridement
Much of the confusion in wound debridement coding comes from mixing up three different methods.
| Family | Codes | Method | How measured | Medicare note |
| Selective debridement | 97597, +97598 | Sharp selective removal of devitalized tissue only (scissors, scalpel, forceps, high-pressure waterjet) | Total wound surface area, in blocks of 20 sq cm | Active wound care management codes; no global period |
| Non-selective debridement | 97602 | Wet-to-moist dressings, enzymatic agents, abrasion, whirlpool | Per session; no area or depth requirement | Bundled under Medicare Part B (status B) — not separately payable |
| Surgical (excisional) debridement | 11042–11047 | Excision of tissue down to and including healthy tissue | Deepest tissue removed + surface area in blocks of 20 sq cm | 0-day global period |
Selective debridement (97597, +97598) removes only devitalized epidermis and dermis — fibrin, slough, exudate, and biofilm — while preserving viable tissue. It is reported by total wound surface area: 97597 for the first 20 sq cm or less, and +97598 for each additional 20 sq cm.
Non-selective debridement (97602) removes devitalized tissue without selectively targeting it — wet-to-moist dressings, enzymatic debriding agents, abrasion, or whirlpool. It is reported once per session regardless of wound size. The critical billing point: Medicare Part B treats 97602 as a bundled service (status indicator B). It is included in the payment for other services and is not separately payable, and the patient cannot be billed for it. Some non-Medicare payers do reimburse 97602, so check the payer’s policy before writing it off.
Surgical debridement (11042–11047) is excisional: the provider cuts away necrotic tissue down into viable, bleeding tissue. These codes are chosen by the deepest tissue layer removed and by surface area.
One hard rule applies across all three families: never report a surgical debridement code (11042–11047) together with 97597–97602 for the same wound. NCCI procedure-to-procedure edits bundle them; reporting both for one wound is a common, avoidable error.
If coding accuracy is a recurring problem in your wound care program, our medical coding services team can audit your documentation and code selection before claims go out.
Wound Debridement CPT Codes by Depth
For surgical debridement, select the code by the deepest tissue removed, then add the add-on code for each additional 20 sq cm beyond the first.
- 97597 — Selective debridement of skin (epidermis/dermis), first 20 sq cm or less
- +97598 — Selective debridement, each additional 20 sq cm (add-on to 97597)
- 11042 — Debridement of subcutaneous tissue (includes epidermis and dermis, if performed), first 20 sq cm or less
- +11045 — Subcutaneous tissue, each additional 20 sq cm (add-on to 11042)
- 11043 — Debridement of muscle and/or fascia, first 20 sq cm or less
- +11046 — Muscle and/or fascia, each additional 20 sq cm (add-on to 11043)
- 11044 — Debridement of bone, first 20 sq cm or less
- +11047 — Bone, each additional 20 sq cm (add-on to 11044)
Each primary code includes all shallower layers removed from the same wound. If skin, subcutaneous tissue, and muscle are removed from one wound, report only 11043 (plus +11046 past 20 sq cm) — never stack 11042 and 11043 for one wound.
Debridement of Open Fractures: 11010–11012
Debridement performed at the site of an open fracture or open dislocation — including removal of foreign material and contaminated tissue — is reported with a separate code family that many guides omit:
- 11010 — Debridement including removal of foreign material at the site of an open fracture and/or dislocation; skin and subcutaneous tissues
- 11011 — Same, skin, subcutaneous tissues, muscle fascia, and muscle
- 11012 — Same, skin, subcutaneous tissues, muscle fascia, muscle, and bone
These codes apply only at an open fracture/dislocation site; routine wound debridement uses 97597, 97602, or 11042–11047.
Burns are also coded separately: debridement and dressing of partial-thickness burns is reported with 16020–16030, selected by total body surface area treated (small, medium, or large), not by depth or sq cm.
How to Calculate Wound Surface Area (Sq Cm)
For area-based codes (97597/+97598 and 11042–11047), measure the wound’s length × width in centimeters to get the total surface area in sq cm. When multiple wounds are debrided to the same depth, add their surface areas together and report one code for the combined total. Wounds debrided to different depths are coded separately.
Worked examples:
- Subcutaneous debridement, 5 cm × 4 cm wound = 20 sq cm. Report 11042 (first 20 sq cm or less); no add-on needed.
- Muscle debridement, 6 cm × 5 cm wound = 30 sq cm. Report 11043 + 11046 (first 20 sq cm, plus one additional 20 sq cm or part thereof).
- Mixed-depth wound, 18 sq cm total — the provider debrides through skin and subcutaneous tissue into a wound that extends to muscle, but the deepest tissue *actually removed* is subcutaneous tissue. Report 11042. You code what was removed, not how deep the wound goes.
- Infected wound, upper arm, 10 sq cm of subcutaneous debridement = 10 sq cm, deepest tissue removed is subcutaneous. Report 11042 (within “first 20 sq cm or less”).
Global Periods for Debridement Codes
Here are the global periods for the debridement families, stated plainly:
| Codes | Global period | Notes |
| 11042–11047 | 0-day global period | Related services on the following days are not bundled into a global package; each encounter stands on its own |
| 11010–11012 | 0-day global period | Open fracture/dislocation debridement |
| 97597, +97598 | No global period | Active wound care management services; reported per session |
| 97602 | No global period | Bundled under Medicare Part B (status B); not separately payable |
Because 11042–11047 carry a 0-day global period, a return visit the next day for further debridement is reported on its own merits, with no global-period modifier — unlike major surgical codes with 90-day globals.
Irrigation, Exploration and Related Wound Procedures
Several services are commonly searched alongside debridement but follow different rules:
- Wound irrigation alone is not separately reportable. Irrigation and cleansing are bundled into the debridement code or into the evaluation and management service performed. There is no standalone CPT code for simple irrigation of a wound.
- Incision and drainage (I&D) is reported when the actual service is draining a collection: 10060 (I&D of abscess, simple or single) and 10061 (complicated or multiple). For a complex drainage of a postoperative wound infection, use 10180.
- Penetrating wound exploration (surgical exploration of a penetrating wound requiring opening, debridement, and enlargement of the wound tract) is coded by anatomic site: 20100 neck, 20101 chest, 20102 abdomen/flank/back, 20103
- Closure: when a wound is repaired, debridement of that same wound is included in the repair codes 12001–13160 when performed as part of the closure. Do not report debridement separately for a wound you are also repairing.
Documentation Requirements
Debridement claims survive audits on documentation. Every operative or procedure note should record:
- Wound location and laterality
- Depth of tissue removed (not just wound depth)
- Total surface area treated, in sq cm (length × width)
- Type of tissue removed (necrotic tissue, slough, eschar, infected tissue)
- Instruments and method used (scalpel, curette, scissors, forceps, waterjet, enzymatic agent)
- Medical necessity — infection, necrosis, non-healing status, or other clinical indication
- Pre- and post-debridement wound measurements
- Anesthesia used, bleeding control, and dressing applied, where applicable
Missing sq cm measurements are the most common documentation gap — without them, the payer cannot verify the units billed.
Billing Rules and NCCI Edits
- Deepest-tissue rule: one primary code per wound, based on the deepest tissue removed; shallower layers in the same wound are included.
- Sum same-depth wounds: add the surface areas of wounds debrided to the same depth and report a single code for the total.
- Different depths are separate: wounds debrided to different depths are coded separately, one primary code per depth.
- Never combine families on one wound: do not report 11042–11047 with 97597–97602 for the same wound in the same session.
- Modifiers: 25 for a significant, separately identifiable E/M service on the same day; 59/XS for a distinct procedural service at a separate site; 58 for a staged or planned related procedure; 76 for a repeat procedure by the same provider.
- Do not bill the patient for 97602 under Medicare Part B: as a bundled service, the 97602 amount cannot be shifted to the beneficiary.
Correct diagnosis pairing matters as much as the procedure code — review our guide to ICD-10 codes for the diagnosis documentation standards payers expect.
ICD-10 Codes Commonly Paired With Debridement
- Pressure ulcers — L89.-, coded by site and stage (for example, 154, pressure ulcer of sacral region, stage 4)
- Non-pressure chronic ulcers — L97.- (lower limb, by site and severity) and L98.4- for other sites
- Diabetic foot ulcer — E11.621 (type 2 diabetes with foot ulcer), always paired with an 4- (heel/midfoot) or L97.5- (other part of foot) code for site and severity
- Open wounds — S81.- (open wound of knee and lower leg) and – (open wound of ankle and foot), by site with the appropriate 7th character
- Wound infection — T81.4- (infection following a procedure) and – (cellulitis, by site)
Common Coding Mistakes
- Coding the wound’s depth instead of the deepest tissue removed — the most expensive debridement error; it drives overcoding and audit exposure.
- Reporting 97602 to Medicare expecting separate payment — it is bundled under Part B and will not be paid as a standalone service.
- Billing 97597 and 11042 for the same wound — an NCCI bundling violation; choose the family that matches the service performed.
- Forgetting add-on codes when the treated area exceeds 20 sq cm (each add-on covers one additional 20 sq cm or part thereof).
- Missing sq cm documentation — no measurement in the note means the units billed cannot be supported.
- Using the open fracture codes (11010–11012) for routine wounds — these are reserved for debridement at an open fracture or dislocation site.
- Reporting irrigation separately — simple irrigation is bundled and has no standalone code.
Quick-Reference Cheat Sheet
| Code | Depth / Type | Size rule | Add-on | Global |
| 97597 | Selective — skin only | First 20 sq cm or less | +97598 | None |
| 97602 | Non-selective | Per session | — | None (bundled, Part B) |
| 11042 | Surgical — subcutaneous | First 20 sq cm or less | +11045 | 0-day |
| 11043 | Surgical — muscle/fascia | First 20 sq cm or less | +11046 | 0-day |
| 11044 | Surgical — bone | First 20 sq cm or less | +11047 | 0-day |
| 11010 | Open fracture — skin/subcutaneous | Per session | — | 0-day |
| 11011 | Open fracture — + muscle | Per session | — | 0-day |
| 11012 | Open fracture — + bone | Per session | — | 0-day |
FAQs
What is the difference between selective and non-selective debridement?
Selective debridement (97597, +97598) removes only devitalized tissue from the skin, using sharp instruments, and is billed by wound surface area. Non-selective debridement (97602) removes tissue indiscriminately through wet-to-moist dressings, enzymatic agents, or abrasion, and is billed per session. Surgical debridement (11042–11047) is a third category: excision down to healthy tissue, coded by depth. The method — not the wound’s appearance — decides the family.
What is the global period of CPT 11042?
CPT 11042 has a 0-day global period. The same applies to the entire surgical debridement family, 11042–11047. Follow-up debridement on a later day is billed on its own without global-period restrictions.
Can 11042 and 11043 be billed together?
Not for the same wound — you report one code per wound, based on the deepest tissue removed. If two separate wounds are debrided in the same session, one to subcutaneous depth and one to muscle, each wound is coded on its own (11042 for the first, 11043 for the second).
Is 97602 payable by Medicare?
No, not as a separate service. Medicare Part B assigns 97602 a bundled status (status B): payment is included in other services, and it cannot be billed to the patient. Some commercial and Medicaid payers do pay 97602 — verify payer policy.
What is the CPT code for irrigation and debridement of a wound?
There is no single “irrigation and debridement” code. Irrigation alone is bundled and not separately reportable. If the service was debridement, report the family that matches the method and depth (97597, 97602, or 11042–11047). If it was actually drainage of an abscess or infected collection, report 10060/10061 (or 10180 for a complex postoperative wound infection).
What is the CPT code for wound debridement?
It depends on method and depth: 97597 for selective skin debridement, 97602 for non-selective debridement, 11042 for subcutaneous tissue, 11043 for muscle/fascia, and 11044 for bone — each with add-on codes for area beyond the first 20 sq cm. Open fracture debridement uses 11010–11012.
How do you bill debridement of multiple wounds?
Add together the surface areas of all wounds debrided to the same depth and report one primary code (plus add-ons) for the combined area. Wounds debrided to different depths are reported separately, each with its own primary code.
How is wound debridement surface area calculated?
Multiply length by width in centimeters. A 5 cm × 4 cm wound equals 20 sq cm — exactly one primary-code unit (“first 20 sq cm or less”). Each additional 20 sq cm, or part of it, earns one add-on unit.
Conclusion
Wound debridement coding comes down to three decisions: pick the correct family (selective 97597, non-selective 97602, or surgical 11042–11047), code the deepest tissue actually removed, and document the surface area in sq cm every time. Add the 0-day global rule, the NCCI bundling edits, and the open fracture family (11010–11012), and most denials disappear. If your wound care claims keep denying or underpaying, AAA Medical Billing’s coding team can review your documentation and fix the patterns at the source — call 1-844-44-AAAMB to get started.
