TL;DR: The Centers for Medicare & Medicaid Services modified NCD 47, its coverage policy for treatment of decubitus ulcers, effective January 9, 2026. Here's what billing teams need to know before submitting claims.
The CMS decubitus ulcer coverage policy under NCD 47 Medicare draws a clear line: hydrotherapy (whirlpool) treatments are covered when medically necessary, and several other treatment types are explicitly not covered. This policy does not list specific CPT or HCPCS codes, which creates a documentation burden your billing team needs to account for now. If you treat pressure ulcers and bill Medicare, this update deserves a close read before January 9, 2026.
Quick-Reference Table
| Field | Detail |
|---|---|
| Payer | CMS (Centers for Medicare & Medicaid Services) |
| Policy | Treatment of Decubitus Ulcers |
| Policy Code | NCD 47 |
| Change Type | Modified |
| Effective Date | 2026-01-09 |
| Impact Level | Medium |
| Specialties Affected | Wound care, physical therapy, skilled nursing, home health, dermatology |
| Key Action | Audit all decubitus ulcer treatment claims for medical necessity documentation and verify that non-covered treatment types are not being billed to Medicare |
CMS Decubitus Ulcer Coverage Criteria and Medical Necessity Requirements 2026
NCD 47 is the National Coverage Determination governing Medicare coverage of treatments for decubitus ulcers (pressure ulcers or pressure injuries). The coverage policy centers on one accepted principle: remove dead tissue from the lesion and keep it clean to promote new tissue growth.
Hydrotherapy — specifically whirlpool treatment — is the covered service under this policy. Medicare covers it when the treatment is "reasonable and necessary" for the patient's condition. That phrase is doing a lot of work here, and it's where your documentation needs to be airtight.
Medical necessity is not assumed. Your clinical documentation must show that the patient has a decubitus ulcer, that hydrotherapy is the appropriate intervention, and that the treatment is actively serving the wound healing goal. Thin documentation on any of those three points is a fast path to a claim denial.
This policy falls under the Physicians' Services benefit category. That matters for billing purposes: the claim routes through physician fee schedule rules, not durable medical equipment or facility-specific channels. Prior authorization is not explicitly required under NCD 47, but medical necessity documentation requirements still apply. Your Medicare Administrative Contractor may have a local coverage determination that adds requirements on top of this NCD — check with your MAC before assuming the national policy is the full picture.
On reimbursement: this policy establishes coverage eligibility, not a fee schedule rate. Your actual reimbursement for hydrotherapy services depends on the specific CPT codes your team bills, the setting of service, and applicable fee schedule rates for your region.
CMS Decubitus Ulcer Exclusions and Non-Covered Indications
This is the section most billing teams miss — and where claim denial risk is highest.
NCD 47 explicitly excludes several treatment types on the grounds that their safety and effectiveness have not been established under the Medicare program. These are not experimental in a gray-zone sense. CMS has named them directly as non-covered. Do not bill these to Medicare for decubitus ulcer treatment:
| # | Excluded Procedure |
|---|---|
| 1 | Ultraviolet light therapy applied to decubitus ulcers |
| 2 | Low intensity direct current treatment |
| 3 | Topical application of oxygen |
| 4 | Topical dressings with Balsam of Peru in castor oil |
The real issue here is that some of these treatments — particularly topical oxygen and specialized dressings — remain in active use in wound care settings. If your clinicians use them alongside covered treatments, the billing needs to reflect that distinction accurately. Bundling a non-covered service into a claim for a covered one is a documentation error that invites scrutiny.
If your practice uses any of the non-covered treatment types listed above, make sure your billing team knows not to submit those charges to Medicare. Secondary payers may have different rules, but under NCD 47, these services do not have a reimbursement pathway through Medicare.
Coverage Indications at a Glance
| Indication | Status | Relevant Codes | Notes |
|---|---|---|---|
| Hydrotherapy (whirlpool) for decubitus ulcers | Covered | Not specified in NCD 47 | Must be reasonable and necessary; document medical necessity for each claim |
| Ultraviolet light treatment for decubitus ulcers | Not Covered | Not specified in NCD 47 | Safety and effectiveness not established under Medicare |
| Low intensity direct current treatment | Not Covered | Not specified in NCD 47 | Safety and effectiveness not established under Medicare |
| Topical application of oxygen | Not Covered | Not specified in NCD 47 | Safety and effectiveness not established under Medicare |
| Topical dressings with Balsam of Peru in castor oil | Not Covered | Not specified in NCD 47 | Safety and effectiveness not established under Medicare |
CMS Decubitus Ulcer Billing Guidelines and Action Items 2026
NCD 47 does not list specific CPT or HCPCS codes. That's not an oversight — it's a documentation and charge capture problem your billing team has to solve. Here's what to do before the effective date of January 9, 2026.
| # | Action Item |
|---|---|
| 1 | Identify the CPT codes your practice currently uses for hydrotherapy and whirlpool wound care. Common candidates include codes for therapeutic whirlpool procedures billed under the physician fee schedule, but your charge capture needs to match the actual service documentation. Don't assume — pull the codes from your system and confirm they align with the service description in NCD 47. |
| 2 | Cross-check your MAC's local coverage determination for decubitus ulcer treatment. NCD 47 sets the national floor. Your Medicare Administrative Contractor may have an LCD that adds documentation requirements, diagnosis code specificity, or frequency limitations. If you don't know your MAC's position, contact them directly or pull their LCD database. |
| 3 | Audit your medical necessity documentation for all active decubitus ulcer hydrotherapy claims. Each claim needs to show the wound exists, the treatment is appropriate, and the treatment is progressing toward healing. Vague notes like "wound care performed" won't hold up on review. Your documentation should name the ulcer, describe its stage and condition, and connect hydrotherapy to the treatment goal. |
| 4 | Train your clinical and billing staff on the non-covered treatment list. The four excluded treatment types — ultraviolet light, low intensity direct current, topical oxygen, and Balsam of Peru in castor oil dressings — need to be flagged in your billing system. If a clinician documents one of these treatments for a pressure ulcer, that charge cannot go to Medicare under NCD 47. Set up a charge entry edit or a billing review step to catch it before submission. |
| 5 | Review any secondary payer rules separately. NCD 47 governs Medicare. If your patients carry secondary coverage, those payers may cover treatments that Medicare excludes. Don't write off non-covered charges entirely until you've checked the secondary plan. Bill Medicare first, document the denial, and then route appropriately. |
| 6 | If your practice bills for wound care in a skilled nursing facility or home health setting, confirm how NCD 47 applies in those contexts. The policy falls under Physicians' Services, which affects how it maps to facility billing. Your compliance officer should weigh in before the January 9, 2026 effective date if your setting creates any ambiguity. |
| 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 Decubitus Ulcer Treatment Under NCD 47
A Note on Code Availability
NCD 47 does not specify CPT, HCPCS Level II, or ICD-10-CM codes. This is not uncommon for older NCDs that predate the current coding structure. It means the decubitus ulcer billing guidelines in this policy apply based on the service description and medical necessity criteria — not a defined code list.
This creates real risk. Without a defined code list in the NCD itself, claim reviewers use the service description and your documentation to determine coverage eligibility. A claim for hydrotherapy that lacks clear documentation linking it to a decubitus ulcer could be denied even if the underlying service is covered.
What this means for your team: You are responsible for selecting the correct CPT codes for hydrotherapy or whirlpool wound care from your current code set and ensuring your documentation connects those codes to the NCD 47 coverage criteria. Work with your coding team or billing consultant to confirm the right codes for your setting and service mix.
If you're billing therapeutic whirlpool services and you're not sure whether your current code selection aligns with NCD 47 coverage, loop in your compliance officer before January 9, 2026. This is exactly the kind of gray area where a pre-submission audit is worth the time.
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