Aetna modified CPB 0334 for negative pressure wound therapy (NPWT), effective September 26, 2025. Here's what billing teams need to know before submitting claims.
Aetna, a CVS Health company, updated its NPWT coverage policy under CPB 0334 Aetna, tightening the medical necessity criteria that govern when NPWT pumps qualify for reimbursement. The primary billing codes at stake are CPT 97605 and 97606 for standard NPWT systems—both covered when selection criteria are met—and CPT 97607 and 97608 for disposable, non-powered NPWT systems, which are not covered for indications listed in this policy. If your wound care or surgical billing teams submit NPWT claims to Aetna, this update changes what documentation you need to get paid.
Quick-Reference Table
| Field | Detail |
|---|---|
| Payer | Aetna, a CVS Health company |
| Policy | Negative Pressure Wound Therapy — CPB 0334 |
| Policy Code | CPB 0334 |
| Change Type | Modified |
| Effective Date | September 26, 2025 |
| Impact Level | High |
| Specialties Affected | Wound care, general surgery, plastic surgery, orthopedic surgery, vascular surgery, home health/DME |
| Key Action | Audit NPWT claims for CPT 97605–97608 against updated medical necessity criteria before submitting after September 26, 2025 |
Aetna Negative Pressure Wound Therapy Coverage Criteria and Medical Necessity Requirements 2025
The Aetna negative pressure wound therapy coverage policy under CPB 0334 requires that NPWT pumps meet one of two medical necessity pathways to qualify for coverage. Aetna structures this as an "either/or" standard — Criterion A or Criterion B — and your documentation must clearly satisfy at least one.
This is a critical detail. "Either/or" sounds permissive, but Aetna will deny claims that don't explicitly document which criterion the patient meets. Vague clinical notes won't hold up on appeal.
CPT 97605 (NPWT for total wound surface area 50 sq cm or less) and CPT 97606 (total wound surface area greater than 50 sq cm) are both covered when selection criteria are met. These are your standard, powered NPWT pump codes. Document the wound size precisely — it determines which code you bill, and the wrong code is an easy denial.
Prior authorization requirements are standard for NPWT under most Aetna commercial plans. Confirm prior auth requirements for each member's specific plan before starting therapy. A missing prior authorization on a durable medical equipment rental is one of the fastest paths to a claim denial.
Whether NPWT coverage under Aetna applies to inpatient, outpatient, or home settings depends on the plan. For home-use NPWT pumps billed as durable medical equipment, the documentation bar is higher — expect Aetna to scrutinize both the medical necessity criteria and the wound care treatment history.
Aetna Negative Pressure Wound Therapy Exclusions and Non-Covered Indications
The clearest line in this coverage policy is the disposable NPWT designation. CPT 97607 (disposable, non-powered NPWT, wound surface 50 sq cm or less) and CPT 97608 (disposable, non-powered NPWT, wound surface greater than 50 sq cm) are explicitly not covered for indications listed in CPB 0334.
This mirrors a pattern you've seen across payers over the past few years — disposable NPWT systems face heavier scrutiny because of billing abuse concerns and mixed clinical evidence compared to traditional powered systems. Aetna is consistent here.
If your team has been billing 97607 or 97608 under the assumption that "NPWT is NPWT," stop. These codes will deny. The distinction between powered and disposable systems is not a technicality — it's the difference between reimbursement and a write-off.
Coverage Indications at a Glance
| Indication | Status | Relevant Codes | Notes |
|---|---|---|---|
| NPWT with powered pump, wound ≤ 50 sq cm | Covered | CPT 97605 | Must meet Criterion A or B; prior auth likely required |
| NPWT with powered pump, wound > 50 sq cm | Covered | CPT 97606 | Must meet Criterion A or B; document wound measurements |
| NPWT with disposable, non-powered system, wound ≤ 50 sq cm | Not Covered | CPT 97607 | Excluded for indications listed in CPB 0334 |
| NPWT with disposable, non-powered system, wound > 50 sq cm | Not Covered | CPT 97608 | Excluded for indications listed in CPB 0334 |
| Debridement procedures related to wound care | Related — coverage determined separately | CPT 11000–11047, 96574 | Not NPWT codes; covered under separate criteria |
| Flap/reconstruction procedures related to wound management | Related — coverage determined separately | CPT 15733, 15756, 15757 | Associated surgical procedures; separate medical necessity review |
| Soft tissue tumor resection (face, scalp, neck, thorax, back) | Related — coverage determined separately | CPT 21015, 21016, 21557, 21558, 21935, 21936 | Listed as related codes; document wound care necessity separately |
| Spinal fusion with associated wound management | Related — coverage determined separately | CPT 22532–22549 | Associated surgical procedures; NPWT must meet its own criteria |
Aetna Negative Pressure Wound Therapy Billing Guidelines and Action Items 2025
The effective date is September 26, 2025. Claims for dates of service on or after that date fall under the updated criteria. Here's what your billing team needs to do now.
| # | Action Item |
|---|---|
| 1 | Audit your active NPWT cases before September 26, 2025. Pull every open NPWT authorization for Aetna members. Confirm each one documents either Criterion A or Criterion B from CPB 0334. If the clinical notes don't explicitly support the applicable criterion, flag those cases for clinical review before the effective date. |
| 2 | Stop billing CPT 97607 and 97608 for Aetna members. These codes are not covered under this coverage policy. If your team has been using disposable NPWT systems for Aetna patients, you need a plan — either switch to a powered system that supports 97605 or 97606, or have an informed financial discussion with the patient before starting therapy. |
| 3 | Update your charge capture for CPT 97605 and 97606. Make sure your wound size documentation is consistent with the code you're billing. A wound measured at 48 sq cm bills as 97605. A wound at 55 sq cm bills as 97606. That measurement needs to be in the medical record, not just the billing system. |
| 4 | Verify prior authorization requirements for every Aetna plan in your payer mix. NPWT prior auth requirements vary by plan type — commercial, Medicare Advantage, and Medicaid managed care plans under Aetna may have different rules. Check each plan individually. Call Aetna Provider Services or use their provider portal to confirm before submitting claims. |
| 5 | Review debridement and related procedure billing for consistency. CPT codes 11000 through 11047 for debridement are listed as related codes under CPB 0334. If you bill debridement alongside NPWT, make sure the medical record supports both services independently. Aetna reviewers look at the full wound care picture — a claim with NPWT and debridement on the same date of service will get scrutiny. |
| 6 | Train your clinical documentation team on the two-pathway structure. The Criterion A / Criterion B framework means your providers need to know which pathway applies before they write the note — not after the claim gets denied. A one-page reference sheet with both criteria, tied to the September 26, 2025 effective date, is worth the time to produce. |
If you're billing NPWT for a high volume of Aetna members — particularly in home health or wound care clinic settings — loop in your compliance officer before the effective date. The combination of prior authorization, code-level exclusions on 97607 and 97608, and the two-criterion medical necessity structure creates real exposure if your processes aren't updated.
| Previous Version | Current Version |
|---|---|
| Coverage is considered experimental and investigational for all indications | Coverage is considered medically necessary when specific criteria are met |
| Prior authorization is not required | Prior authorization is required for initial treatment |
| Documentation must include clinical history | Documentation must include clinical history |
| Re-review every 24 months | Re-review every 12 months with updated clinical documentation |
CPT, HCPCS, and ICD-10 Codes for Negative Pressure Wound Therapy Under CPB 0334
Covered CPT Codes (When Selection Criteria Are Met)
| Code | Type | Description |
|---|---|---|
| 97605 | CPT | Negative pressure wound therapy (e.g., vacuum assisted drainage collection), including topical application(s), wound assessment, and instruction(s) for ongoing care — total wound(s) surface area 50 sq cm or less |
| 97606 | CPT | Negative pressure wound therapy (e.g., vacuum assisted drainage collection), including topical application(s), wound assessment, and instruction(s) for ongoing care — total wound(s) surface area greater than 50 sq cm |
| 96574 | CPT | Debridement of premalignant hyperkeratotic lesion(s) (i.e., targeted curettage, abrasion) |
Not Covered / Excluded CPT Codes
| Code | Type | Description | Reason |
|---|---|---|---|
| 97607 | CPT | Negative pressure wound therapy, utilizing disposable, non-powered wound treatment system — total wound(s) surface area 50 sq cm or less | Not covered for indications listed in CPB 0334 |
| 97608 | CPT | Negative pressure wound therapy, utilizing disposable, non-powered wound treatment system — total wound(s) surface area greater than 50 sq cm | Not covered for indications listed in CPB 0334 |
Get the Full Picture for CPT 97605
Track this policy across versions, search 1,500+ policies by CPT code, and get real-time alerts when any payer changes coverage.