Dbrdmt opn wnd 1st 20 cm/<
CPT code 97597 covers the removal of dead or damaged tissue from an open wound for the first 20 square centimeters or less. This helps wounds heal by cleaning away tissue that could cause infection or slow recovery.
RVU breakdown
Conversion factor: 32.3465 · Source: CMS MPFS RVU25A · Confidence: High
Billing tips
Bill in the non-facility setting when possible to capture the full $96.72 reimbursement versus $33.96 facility rate
Impact: Difference of $62.76 per procedure (185% higher reimbursement in office setting)
Document total wound surface area precisely using length × width measurements; if over 20 sq cm, add CPT 97598 for each additional 20 sq cm
Impact: 97598 adds $47.23 non-facility per unit; a 50 sq cm wound generates $143.95 vs $96.72 if size not documented
Specify 'selective' debridement in documentation with instrument used (scissors, scalpel, forceps); non-selective methods (wet-to-dry) use 97602 at lower rate
Impact: 97597 pays $96.72 vs 97602 at $28.45 non-facility—difference of $68.27 (240% more)
Photograph wounds before and after debridement with ruler visible for wound size verification
Impact: Reduces audit risk and denial rate by 30-40% according to MAC audit data; supports medical necessity appeals
Bill on the same day as wound care E/M visit using modifier 25 on the E/M code, not the procedure
Impact: Captures additional $75-150 for E/M service; document separate decision-making for the E/M to withstand audits
Do not bill 97597 with excisional debridement codes (11042-11047); these are considered more extensive procedures that bundle selective debridement
Impact: Prevents denials and recoupment; excisional debridement codes reimburse higher but require depth documentation
Common denials
Medical necessity not established—debridement performed too frequently without documented wound progression
How to appeal: Submit wound measurement log showing size, depth, exudate, tissue type at each visit; include photos demonstrating necrotic tissue requiring removal; cite LCD guidelines for frequency (typically 1-3 times per week for active debridement phase)
Lack of documentation specifying selective vs non-selective technique or instruments used
How to appeal: Provide detailed operative note describing use of forceps, scissors, or scalpel for selective tissue removal; emphasize clinical skill required to preserve viable tissue; differentiate from passive methods
Wound size not documented or measurement method unclear, preventing verification of correct code
How to appeal: Submit documentation showing length × width measurements in centimeters with calculation of total surface area; provide photos with measurement tool visible; include diagram of wound location and dimensions
Bundled with E/M service or other procedure performed same day without appropriate modifier
How to appeal: Resubmit claim with modifier 25 on E/M code showing separate documentation of evaluation beyond wound assessment; or use modifier 59 if performed on distinct wound from other procedure; include separate procedure notes
Frequently asked questions
What is the difference between CPT 97597 and 97598?
CPT 97597 covers selective debridement of the first 20 square centimeters or less of wound surface area. CPT 97598 is an add-on code used for each additional 20 square centimeters beyond the first. For example, a 45 sq cm wound would be billed as 97597 (first 20 sq cm) plus two units of 97598 (21-40 sq cm and 41-45 sq cm).
How much does Medicare pay for CPT code 97597 in 2025?
Medicare pays $96.72 for CPT 97597 in the non-facility (office) setting and $33.96 in the facility setting based on the 2025 national average rates. Actual payment varies by geographic location based on the MAC locality adjustment. The work RVU is 0.77 and total RVU is 2.99.
Can you bill 97597 with an office visit on the same day?
Yes, you can bill an E/M service with 97597 on the same day if the E/M represents a separately identifiable service beyond the debridement procedure. Append modifier 25 to the E/M code and document the separate decision-making process, assessment of other conditions, or evaluation that warranted the E/M service independently from the wound care.
What is selective debridement versus non-selective debridement?
Selective debridement (97597) uses instruments like scissors, scalpel, or forceps to remove only devitalized tissue while preserving healthy tissue, requiring clinical skill and judgment. Non-selective debridement (97602) uses methods that cannot distinguish between viable and nonviable tissue, such as wet-to-dry dressings, enzymatic agents, or whirlpool, and reimburses at a significantly lower rate.
How do you measure wound size for billing CPT 97597?
Measure wound size by multiplying the longest length by the widest width in centimeters to calculate surface area. Document both dimensions and the calculated total square centimeters. If multiple wounds are debrided, calculate each wound separately and sum the total surface area. Use a ruler or measuring device and photograph documentation when possible.
How often can you bill 97597 for the same wound?
Frequency depends on medical necessity and payer LCD policies. Most Medicare contractors allow 1-3 debridement sessions per week during active treatment phase when necrotic tissue is present and wound is progressing toward healing. More frequent debridement requires additional documentation justifying clinical need. Chronic maintenance debridement without wound improvement typically faces scrutiny.
What documentation is required to support medical necessity for 97597?
Required documentation includes wound location, precise measurements (length × width in cm), tissue type requiring removal (necrotic, slough, eschar), instruments and technique used, amount of tissue removed, wound appearance after debridement, and clinical rationale (infection prevention, healing promotion, preparing for closure). Include wound progression notes showing response to treatment and photographs when possible.