What CPT Code Is Used for Wound Debridement?

Wound Debridement CPT Codes FAQ

The CPT code for wound debridement depends on the method used and the tissue depth reached. Selective debridement — removing devitalized tissue without cutting to viable structures — is reported with 97597 for the first 20 sq cm and 97598 for each additional 20 sq cm. Excisional debridement — using a sharp instrument to cut past devitalized tissue until viable, bleeding tissue is reached — is reported with 11042-11047 based on the deepest tissue layer removed. The distinction between selective and excisional is not the instrument. It is whether the clinician cut through to viable tissue.

What is the difference between selective and excisional debridement?

The coding distinction turns on a single clinical question: did the clinician reach viable, bleeding tissue?

Selective debridement (97597/97598) involves removing devitalized tissue — slough, loose eschar, fibrin, biofilm — without excising into viable structures. The clinician may use a curette, scissors, scalpel, or forceps. The tool does not determine the code. What matters is that the debridement stayed within the nonviable tissue layer.

Excisional debridement (11042-11047) involves cutting through devitalized tissue until viable tissue is reached. The hallmark is active bleeding at the wound base or margins. Coded by the deepest tissue type removed:

11042 — Skin and subcutaneous tissue, first 20 sq cm
11043 — Muscle and/or fascia, first 20 sq cm
11044 — Bone, first 20 sq cm
11045 — Skin/subcutaneous add-on, each additional 20 sq cm (use with 11042)
11046 — Muscle/fascia add-on, each additional 20 sq cm (use with 11043)
11047 — Bone add-on, each additional 20 sq cm (use with 11044)

For a complete list of wound care procedure codes, see our CPT code reference for 2026.

When should I bill 97597 vs 11042?

Choose based on what happened clinically, not on what pays more.

Bill 97597/97598 when the clinician removed nonviable tissue but did not cut into viable underlying structures. The wound bed after debridement shows granulation tissue that was already present, not newly exposed bleeding tissue. This is the correct code for routine maintenance debridement at most wound care visits.

Bill 11042-11047 when the clinician excised tissue down to a viable plane. The note should describe active bleeding at the debridement margin, the tissue type excised (subcutaneous, muscle, or bone), and the clinical necessity for aggressive removal.

The practical test: if the wound bed looked essentially the same underneath after removing slough, that is selective. If the clinician cut until the wound bled and the tissue plane changed, that is excisional.

How do wound size thresholds work for add-on codes?

Both code families use 20 sq cm increments, but the add-on rules differ.

For selective debridement, 97597 covers the first 20 sq cm of wound surface area debrided. 97598 is appended for each additional 20 sq cm. A 55 sq cm debridement bills as 97597 x1 plus 97598 x2.

For excisional debridement, add-on codes (11045-11047) must match the tissue depth of the primary code. If the primary code is 11042 (skin/subcutaneous), the add-on is 11045. If the primary is 11043 (muscle/fascia), the add-on is 11046. You cannot pair 11045 with 11043 — the depth must match.

When debriding multiple wounds at different tissue depths in the same session, report the deepest wound as the primary code. Add-on codes then capture the total additional area across all wounds at each depth level.

What does Medicare reimburse for debridement codes?

Medicare national average reimbursement rates (2026 Medicare Physician Fee Schedule, non-facility/office setting):

97597 (selective, first 20 sq cm) — approximately $90-$110
97598 (selective, add-on per 20 sq cm) — approximately $40-$55
11042 (excisional, skin/subQ, first 20 sq cm) — approximately $155-$190
11043 (excisional, muscle/fascia, first 20 sq cm) — approximately $245-$295
11044 (excisional, bone, first 20 sq cm) — approximately $310-$370

Actual reimbursement varies by geographic locality (GPCI adjustment), place of service, and provider type. Medicare Advantage plans may apply different fee schedules entirely. Billing 11042 when the clinical record supports only selective debridement is a compliance risk that payers actively audit.

For modifier usage and NCCI bundling rules, see our debridement billing guide.

What documentation determines the correct debridement code?

The single most important documentation element is describing the tissue depth reached.

A defensible debridement note must include:

Pre-debridement wound assessment — wound dimensions, tissue types present, and the clinical indication for debridement.
Method and instrument used — curette, scalpel, scissors, rongeur. The instrument alone does not determine selective vs excisional, but it supports the narrative.
Deepest tissue layer reached — "debrided adherent eschar to the level of subcutaneous fat with active bleeding at wound margins" supports 11042. "Removed fibrinous slough from wound surface" supports 97597.
Post-debridement wound description — what the wound bed looked like after the procedure, including whether active bleeding was present.
Total wound area debrided — measured in square centimeters, required for both code families to justify unit counts.

If the note says "debridement performed" without describing the tissue depth reached, neither selective nor excisional is supportable on audit. The documentation must answer the question the code is designed to answer: how deep did you go?