Where the rules live
Medicare's surgical dressing benefit is governed by LCD L33831 and its companion Policy Article A54563, issued by the four DME MACs. The current LCD revision took effect January 1, 2024 and the current Policy Article revision on December 5, 2024; both were still in effect when we checked on October 6, 2026, with no proposed revision open.
The short version
- Document a qualifying wound and a complete initial evaluation.
- Re-evaluate monthly — weekly for nursing-facility patients and heavily draining or infected wounds.
- Write a new order every 3 months for each dressing.
- Keep quantities inside the change-frequency limits, a month's supply at a time.
Start with a qualifying wound
The Policy Article puts it plainly: “Surgical dressings are covered when a qualifying wound is present.” A qualifying wound is either of the following:
- A wound caused by, or treated by, a surgical procedure; or
- A wound after debridement, regardless of the debridement technique.
If the record doesn't establish one of these, the rest of the documentation can't carry the claim.
The initial evaluation
The medical record must specify:
- The type of qualifying wound
- Location, number and size of the wound(s)
- Whether the dressing is primary or secondary
- Amount of drainage
- The type of dressing
- The number or amount of dressings used at one time
- How often the dressing is changed
- Any other relevant information
Revision R14 of the Policy Article removed “the size of the dressing (if applicable)” from this list.
Re-evaluations
The treating practitioner, or their designee, updates the evaluation monthly. For patients in a nursing facility, and for heavily draining or infected wounds, Medicare expects evaluations weekly.
Each evaluation records the wound's type, location, size (length × width) and depth, amount of drainage, and any other relevant status.
Orders
A new order is required every 3 months for each dressing being used — and whenever a dressing is added or the quantity goes up.
Under 42 CFR 410.38(d)(1), a written order must include six elements, and the supplier must have it before submitting the claim:
- Beneficiary name or Medicare Beneficiary Identifier (MBI)
- General description of the item
- Quantity to be dispensed, if applicable
- Order date
- Treating practitioner name or NPI
- Treating practitioner signature
Change frequency
The LCD states an “up to” change frequency for most dressing types — none for collagen, hydrogel-impregnated gauze or tubular dressings:
| Dressing type | Usual change frequency |
|---|---|
| Alginate or other fiber gelling dressing | Up to once per day |
| Collagen dressing or filler | No change frequency stated; wear time: “can stay in place up to 7 days” |
| Composite dressing | Up to 3 times per week |
| Contact layer | Up to once per week |
| Foam | Cover: up to 3 times per week · Filler: up to once per day |
| Gauze, non-impregnated | Without a border: up to 3 times per day · With a border: once per day |
| Gauze, impregnated (other than water, saline, hydrogel or zinc paste) | Up to once per day |
| Hydrocolloid | Up to 3 times per week |
| Hydrogel | Cover without a border or filler: up to once per day · With a border: up to 3 times per week · Hydrogel-impregnated gauze: none stated · Gel (A6248) capped at 3 fl oz per wound in 30 days |
| Specialty absorptive | Without a border: up to once per day · With a border: up to every other day |
| Transparent film | Up to 3 times per week |
| Zinc paste bandage / Unna boot (A6456) | Weekly (venous leg ulcers that are qualifying wounds) |
| Compression bandages | No more than one per week, unless part of a multi-layer compression system |
| Gradient compression wrap (A6545) | One per 6 months per leg |
Quantities and refills
- No more than a month's supply may be provided at one time, unless the record documents why an individual patient needs more in the home setting.
- A supplier may contact the patient about a refill no sooner than 30 calendar days, and deliver no sooner than 10 calendar days, before the expected end of the current supply.
- No automatic shipping — “even if authorized by the beneficiary.”
In the office vs. at home
When a practitioner applies surgical dressings as part of a professional service billed to Medicare, the dressings are “incident to” that service and are not separately payable — claims for them “must not be submitted.” Dressings sent home with the patient may be billed, using the place of service for the patient's residence; place of service 11 (office) must not be used.
What this means for ordering
Office stock is a cost of the visit; dressings for home use can go through a supplier. PCSS offers both: wholesale for your shelf and patient-direct supply.
What isn't covered
These items “do not meet the statutory definition of a dressing” and are noncovered under the surgical dressing benefit: wound cleansers (A6260), skin sealants (A6250), saline used to moisten gauze, topical antiseptics, topical antibiotics and enzymatic debriders.
For kits, only the components that meet the definition of a surgical dressing, are ordered by the treating practitioner, and are reasonable and necessary are covered.
Modifiers and coding
- Dressing claims carry the appropriate modifier —
A1–A9,AW,EYorGY— when applicable. A1–A9show the number of qualifying wounds on which that specific HCPCS code is used, not the total number of wounds treated. WithA9(nine or more wounds), the claim must say how many.- Listed dressing codes billed without an A1–A9 modifier are rejected as missing information.
- Collagen dressing codes
A6021–A6024may be billed only for products with a coding verification published on the PDAC Product Classification List.
HCPCS descriptors split most dressing families by border and pad size (16 sq in or less; more than 16 up to 48 sq in; more than 48 sq in). Confirm final coding with your billing staff.
Silver, honey and other additives
The LCD states that the safety and effectiveness of added components such as silver, honey, charcoal, copper and carbon fiber “have not been established.” Dressings with these components are chosen on clinical judgment like any other.
Sources
Checked on October 6, 2026. Medicare policy changes; confirm current versions before relying on them. This page is general information, not billing, coding or legal advice.
- 1LCD L33831 — Surgical DressingsCMS Medicare Coverage Database (DME MACs) · Revision R11, effective January 1, 2024
- 2Policy Article A54563 — Surgical DressingsCMS Medicare Coverage Database (DME MACs) · Revision R14, effective December 5, 2024
- 342 CFR 410.38(d)(1) — Written order elements for DMEPOSeCFR · Current as of October 1, 2026
- 4DME Supplier Manual, Appendix A (HCPCS descriptors)CGS Administrators, DME MAC Jurisdiction B · Fall 2026 edition