Negative Pressure Wound Therapy (NPWT)
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Medical policy governing when NPWT (vacuum-assisted wound closure) is considered medically necessary, criteria for continuation, supply allowances, and exclusions for CareSource members; applies to outpatient and post-discharge settings and to providers requesting authorization.
No material clinical or coverage changes in this revision.
When NPWT is Covered
inv-01: Initial Therapy - Indications
CareSource considers NPWT medically necessary when ANY of the following clinical criteria are met:
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inv-02: Continuation Therapy
Continuation criteria
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inv-03: Exclusions / Not Medically Necessary
Not medically necessary conditions
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Authorization, Documentation, and Billing Requirements
Initial and continued authorization periods
Initial outpatient authorization is granted for one month. Continued authorization is issued in 1-month increments and is contingent on meeting the policy's continuation criteria, with continued approval based on the medical necessity guidelines in this policy.
Required conservative care prior to NPWT
Before NPWT may be considered, documentation must show prior conservative measures appropriate to the wound type were tried and documented, including turning/repositioning, ordered pressure-relief techniques or pressure-reducing surfaces, incontinence/moisture management, compression for venous ulcers, and comprehensive diabetic management and professional foot care for neuropathic ulcers.
- Every-2-hour turning and repositioning regimen documented (chunk 5).
- Pressure relief techniques and/or pressure-reducing surfaces ordered and documented ongoing compliance (chunk 5).
- Incontinence and moisture issues appropriately managed (chunk 5).
- For neuropathic ulcers: comprehensive diabetic management (A1C, medications, education) and professional foot care including inspection, nail care, pressure reduction, and monofilament testing (chunk 7).
- For venous ulcers: consistent application of compression per physician orders for at least 30 days and documented ambulation/leg elevation compliance (chunk 7).
Licensed clinician must perform dressing changes and monitoring
Requests for continuation must include documentation that a licensed medical professional has directly performed dressing changes and is monitoring and controlling the member's underlying medical conditions.
- Explicit note that a licensed medical professional performed the dressing change and follow-up monitoring (chunk 7).
Documentation of prior conservative care required
Medical records submitted for authorization must document the prior conservative measures used for the wound, including turning/repositioning regimens, use and documented compliance with pressure-relieving surfaces, incontinence/moisture management, and, where applicable, diabetic management and professional foot care.
- Record of every-2-hour turning/repositioning (chunk 5).
- Orders and documentation of compliance with pressure-reducing surfaces (chunk 5).
- Documentation of incontinence and moisture management (chunk 5).
- For neuropathic ulcers: documentation of comprehensive diabetic program and foot care by a medical professional (chunk 7).
- For venous ulcers: documentation of at least 30 days of compression per orders and ambulation/leg elevation compliance (chunk 7).
Discontinue approval without measurable month-to-month improvement
If the wound does not show a measurable degree of progressive improvement from month to month, approval for NPWT will be discontinued; an exception applies when a wound was debrided within the last approval period if debridement documentation accompanies the continuation request.
- No measurable month-to-month improvement → approval discontinued (chunk 7).
- If debridement occurred in the last approval period, include documentation (before/after images preferred) to support continuation (chunk 7).
No separate reimbursement for intraoperative NPWT
When NPWT is applied during surgery, it is not reimbursed separately because NPWT is covered under the global surgical code.
- Do not submit separate NPWT reimbursement for intraoperative application; include with the surgical claim (chunk 8).
Key Definitions
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