Wound Care Dressings
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This policy governs prior authorization, documentation, and coverage criteria for Part B wound care surgical dressings used by Longevity Health Plan of Colorado beneficiaries, aligning requirements to LCD L33831 and applying across the states where the plan operates.
No material clinical or coverage changes in this revision.
Coverage criteria for surgical dressings
Coverage criteria (surgical dressings / alginate)
Covered when ALL of the following are met:
Based on chunk 17
Based on chunk 17
Based on chunk 17
Based on chunk 19
Alginate or fiber gelling dressings — covered indications
Covered when ALL of the following are met
Not reasonable on dry wounds or wounds covered with eschar. Dressing change up to once per day; one wound cover sheet approx. size of wound or up to 2 units filler per change (1 unit = 6 inches of alginate/fiber gelling rope).
Collagen dressings — covered indications
Covered when ALL of the following are met
Can remain in place up to 7 days; not covered for heavy exudate, third-degree burns, or active vasculitis.
Composite dressings
Covered when ALL of the following are met
Composite dressing change up to 3 times per week; one wound cover per dressing change.
Contact layer dressings
Covered when ALL of the following are met
Not reasonable when used with a dressing that already has a non-adherent or semi-adherent layer; not intended to be changed with each dressing change; dressing change up to once per week.
Foam dressings
Covered when ALL of the following are met
Primary foam cover change up to 3 times per week; secondary for very heavy exudate up to 3 times per week; foam fillers change up to once per day.
Gauze dressings
Covered when ALL of the following are met
Usually not reasonable to stack more than 2 gauze pads in one area.
Gauze impregnated with water or normal saline (A6228-A6230) will be denied as not reasonable and necessary.
Hydrocolloid dressings
Covered when ALL of the following are met
Hydrocolloid wound covers or fillers dressing change up to 3 times per week.
Hydrogel dressings
Covered when ALL of the following are met
Not reasonable for stage 2 ulcers; dressing change up to once per day for non-border or filler products and up to 3 times per week for covers with adhesive border; filler quantity must only line wound surface and A6248 limited to 3 fluid ounces per wound in 30 days; concurrent use of more than one type of hydrogel on same wound at same time is not reasonable and necessary.
Specialty absorptive dressings
Covered when ALL of the following are met
Specialty absorptive dressing change up to once per day for non-border and up to every other day for products with a border.
Transparent film dressings
Covered when ALL of the following are met
Dressing change up to 3 times per week.
Zinc paste impregnated bandage (A6456)
Covered when ALL of the following are met
Dressing change frequency is weekly; claims for A6456 used for non-qualifying conditions will be denied as statutorily non-covered.
Compression bandages, gradient wraps, and other supplies
Covered when ALL of the following are met
Most compression bandages are reusable; replacement usually no more than once per week unless part of a multi-layer system; gradient compression wrap (A6545) limited to one per 6 months per leg; items used without a qualifying wound will be denied as statutorily non-covered.
Coverage criteria (general additional rules)
Covered when ALL of the following are met
Dressings for catheters/tubes may be included in supply allowances of other policies.
Based on chunks 37 and 36
The product in contact with the wound determines change frequency; combinations with differing change intervals are not reasonable and necessary.
Alginate or other fiber gelling dressings are covered when all coverage criteria are met for moderately to highly exudative full‑thickness wounds (for example, stage 3 or 4 ulcers) and when used as fillers for wound cavities of similar wounds. They are not reasonable and necessary on dry wounds or wounds covered with eschar. Dressing change frequency is up to once per day. At each dressing change use either one wound cover sheet approximately the size of the wound or up to 2 units of wound filler (1 unit = 6 inches of alginate/fiber rope).
Medicare does not recognize many dressing materials as effective; products predominantly composed of those materials are not reasonable and necessary and will be denied. Examples of materials not recognized as effective include: balsam of Peru in castor oil, iodine (other than iodoform gauze), carbon fiber, charcoal, copper, honey, and silver. This list is not exhaustive — any material not explicitly listed among reimbursable dressing types (alginate, collagen, foam, gauze, hydrocolloid, hydrogel, etc.) lacks sufficient clinical evidence for coverage and will be treated accordingly.
Gauze impregnated with water or normal saline (HCPCS A6228–A6230) has no demonstrated medical necessity over non‑impregnated gauze moistened with bulk saline or sterile water and will be denied as not reasonable and necessary. Coverage for impregnated gauze containing other agents depends on the underlying material characteristics.
Compression bandages, gradient compression wraps, and multi‑layer systems are covered only when used as a primary or secondary dressing over wounds that meet statutory qualifying wound requirements (surgically created/modified or debrided). Use of these items without a qualifying wound is statutorily non‑covered and will be denied. In addition, utilization limits apply (for example, gradient compression wrap A6545 is limited to one per 6 months per leg); quantities exceeding specified limits will be denied as not reasonable and necessary.
It is not appropriate to use a hydating dressing (for example, a hydrogel) on the same wound at the same time as an absorptive dressing (for example, an alginate). Such combinations are clinically incompatible and are not reasonable and necessary.
When a primary wound cover includes an impervious backing layer with or without an adhesive border (for example, an adhesive‑border wound cover), use of an additional secondary dressing is not reasonable and necessary. Similarly, additional tape is not required when an adhesive‑border wound cover is used; any reasons for extra tape must be clearly documented.
Authorizations are provided for a 30‑day supply of medically necessary wound care dressings. Prior authorizations requesting quantities that exceed a 30‑day supply may be partially approved with only a 30‑day supply considered reasonable and appropriate; requests beyond that require re‑evaluation of the wound and submission of additional clinical information.
Use of more than one type of wound filler or more than one type of wound cover on a single wound at the same time is not reasonable and necessary. The limited exception is when the primary dressing is an alginate or other fiber gelling dressing or a saline, water, or hydrogel‑impregnated gauze; these primary dressings may require an additional wound cover. Any exception must be documented with clinical rationale.
A secondary dressing whose recommended change frequency is longer (for example, weekly) than the primary dressing's recommended change interval (for example, daily) is not reasonable and necessary. The product in contact with the wound determines the change frequency and combinations with differing change intervals will be denied.
Reiterating the prohibition on multiple simultaneous dressing types: using more than one wound filler or wound cover in a single wound is generally not reasonable and necessary, except for the specified primary dressing exceptions (alginate/fiber gelling dressings or saline/water/hydrogel‑impregnated gauze that may need an additional cover). Any such use requires clear documentation supporting the exception.
Operational guidance on change intervals: when a primary dressing, secondary dressing, and/or wound filler are used together, their recommended change frequencies should be similar. The product contacting the wound determines frequency; combinations with incompatible change frequencies (for example, a weekly secondary over a daily primary) are not reasonable and necessary and will be denied.
HCPCS codes and coding limits
| A6196-A6199 | Alginate or other fiber gelling dressing |
| No codes listed |
| A6196-A6199 | Alginate or other fiber gelling dressing |
| A6203-A6205 | Composite dressings |
| A6206-A6208 | Contact layer dressings |
| A6209-A6215 | Foam dressings |
| A6216-A6221, A6402-A6404, A6407 | Non-impregnated gauze |
| A6222-A6224, A6266 | Gauze impregnated with agents other than water/saline/hydrogel/zinc |
| A6228-A6230 | Gauze impregnated with water or normal saline (denied as not reasonable and necessary) |
| A6234-A6241 | Hydrocolloid dressings |
| A6231-A6233, A6242-A6248 | Hydrogel dressings (A6248 max 3 fl oz per wound per 30 days) |
| A6251-A6256 | Specialty absorptive dressings |
| A6257-A6259 | Transparent film dressings |
| A6261-A6262 | Wound filler, not elsewhere classified |
| A6154 | Wound pouch |
| A6456 | Zinc paste impregnated bandage (covered for venous leg ulcers that meet qualifying wound statutory requirements) |
| A6448-A6455, A6441-A6447 | Light, moderate/high, self-adherent, conforming, padding bandages (coverage only when used over qualifying wounds) |
| A6545 | Gradient compression wrap (limited to one per 6 months per leg when used for qualifying wounds) |
Prior authorization, documentation, and denial guidance
Prior authorization and 30‑day quantity limits
Prior authorization is required for certain Part B wound care supplies; authorizations are provided for a 30‑day supply and prior authorizations for quantities that exceed a 30‑day supply are subject to partial approvals with only the 30‑day amount considered reasonable and appropriate. If treatment extends beyond 30 days, reevaluation of the wound and submission of additional clinical information is required.
- Authorizations cover a 30‑day supply; quantities exceeding 30 days may be partially approved only for 30 days
- Reevaluation and additional clinical information required to continue beyond each 30‑day period
Prior authorization required for excess A6545
Obtain prior authorization when requesting gradient compression wrap (A6545) quantities beyond the allowed utilization; A6545 is limited to one per 6 months per leg.
- A6545 limited to one per 6 months per leg; quantities beyond this require authorization and will otherwise be denied
Suppliers must monitor beneficiary usage and adjust provisioning
Suppliers must monitor beneficiary use and adjust provision of dressings based on wound status and recent consumption; quantity dispensed must consider wound status, likelihood of change, and recent use.
- Suppliers required to monitor actual beneficiary usage and adjust supplies accordingly
- Dispensed quantity should reflect wound status and likelihood of change
Prefer a single dressing type per wound
Prefer use of a single appropriate dressing type per wound; using more than one type of wound filler or cover on a single wound at the same time is not reasonable and necessary except the listed primary dressing exceptions.
- Do not supply multiple filler/cover types for one wound simultaneously
- Exception: primary alginate/fiber gelling or saline/water/hydrogel‑impregnated gauze may need an additional cover and should be documented
Secondary dressings not allowed with impervious primary backing
Do not provide a secondary dressing when the primary dressing has an impervious backing layer (with or without an adhesive border); such secondary dressings are not reasonable and necessary.
- Secondary dressing is not appropriate with primary dressings that contain an impervious backing layer
- If additional tape is used with an adhesive‑border cover, reasons must be well documented
Required documentation to support prior authorization
Include dressing type, dressing size, units/quantity, signed physician order (electronic acceptable), and the most recent wound care assessment performed within 2 weeks in the prior authorization request.
- Dressing type, size, and units/quantity
- Signed physician order (electronic acceptable)
- Most recent wound assessment including type, description, and size/dimensions performed within 2 weeks
Required clinical and supply documentation
Document clinical indication (wound type and stage), whether the wound was surgically created/modified or debrided, wound size to support dressing size selection, and actual usage/consumption to justify quantities dispensed.
- Clinical indication (wound type, staging) and debridement/surgical creation if applicable
- Wound dimensions to justify dressing size
- Actual consumption/usage to justify quantities dispensed
Document rationale for additional tape and dressing size/quantities
Document reasons for additional tape when using a wound cover with an adhesive border and document dressing size selection based on wound dimensions; justify any nonstandard kit components or additional quantities ordered.
- Justify additional tape if adhesive‑border cover is used
- Document pad size selection (pad ≈ wound dimensions + 2 inches) and rationale for kit components/quantities
Gauze impregnated with water or normal saline (A6228–A6230) denied
Claims for gauze impregnated with water or normal saline (A6228–A6230) will be denied as not reasonable and necessary.
- Do not submit claims for A6228–A6230; these will be denied
A6456 billed for venous insufficiency without qualifying wound will be denied
Claims for A6456 (zinc paste impregnated bandage) used for venous insufficiency without a qualifying wound or for other non‑qualifying conditions will be denied as statutorily non‑covered; A6456 is covered only for venous leg ulcers that meet qualifying wound requirements.
- A6456 coverage is limited to venous leg ulcers that meet statutory qualifying wound requirements (surgically created/modified or debrided)
- Claims for non‑qualifying uses will be denied as no benefit
Gradient compression wraps billed without qualifying wound or in excess denied
Claims for gradient compression wraps (A6545) used without a qualifying wound will be denied as statutorily non‑covered; quantities exceeding one per 6 months per leg will be denied as not reasonable and necessary.
- A6545 only covered when used over a qualifying wound
- Utilization limited to one per 6 months per leg; excess quantities will be denied
Dressings predominantly composed of non‑recognized materials will be denied
Claims for dressings composed predominantly of materials not recognized as effective (for example: balsam of Peru in castor oil, iodine other than iodoform gauze, carbon fiber, charcoal, copper, honey, silver) will be denied as not reasonable and necessary.
- Multi‑component dressings are classified by predominant component; predominantly non‑recognized materials are not reimbursable
- The listed materials lack sufficient clinical evidence and will be denied
Combinations with differing change intervals are not allowed
Do not combine products that have differing recommended change intervals on the same wound; combinations of products with differing change frequencies are not reasonable and necessary and will be denied (example: weekly secondary over a daily primary).
- The product in contact with the wound determines change frequency
- Using a secondary dressing with a weekly change frequency over a primary dressing with a daily change interval will be denied
Incompatible change frequency will trigger denial
Claims are at risk when secondary dressings with a weekly change frequency are used over primary dressings with a daily change interval; such combinations will be denied as not reasonable and necessary.
- Incompatible change frequency example: weekly secondary over daily primary
- Ensure change frequencies of primary and secondary products are similar before ordering
Multiple dressing types on one wound may be denied
Using more than one type of wound filler or more than one type of wound cover on a single wound may result in denial as not reasonable and necessary; document clinical rationale if an exception applies (see primary dressing exceptions).
- Multiple filler/cover types on same wound are not reasonable and necessary except the documented exceptions
- Provide clear clinical justification when more than one type is supplied
Definitions and scope
Background and policy scope
Background: wounds are prevalent in the ISNP population and surgical dressing coverage is governed by the Medicare Surgical Dressings benefit and applicable local coverage determinations. Longevity Health Plan aligns its medical necessity requirements to LCD L33831 where applicable. Authorization durations for wound supplies are typically limited to a 30‑day supply, and prior authorization is required for certain Part B wound care supplies; items that do not meet Medicare benefit categories or LCD criteria may be denied.
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