Wound care supply, billing support and documentation audits for physician practices
HCPCS Level II · Collagen dressings and fillers
A sterile collagen dressing, size 16 sq. in. or less, billed each.
Illustration, not the exact productAt a glance
Official CMS descriptor
“Collagen dressing, sterile, size 16 sq. in. or less, each”
PCSS products
PCSS suggests A6021 as the typical HCPCS category for these product sizes.
Collagen sheets
Sizes PCSS suggests A6021 for
Collagen sheets
Sizes PCSS suggests A6021 for
PCSS's suggested HCPCS categories (July 2026) are for reference only, based on product type and pad size. It's a reference, not a coding determination. Confirm final coding with your billing staff.
General product information, not clinical advice.
Size band
CMS splits this dressing type into 3 bands: size 16 sq. in. or less, size more than 16 up to 48 sq. in. and size more than 48 sq. in. Multiply the dressing's length by its width: a 4×4 in. dressing is 16 sq. in., which falls in A6021's band (16 sq. in. or less).
LCD L33831 states no change frequency for collagen dressings or fillers. It says they “can stay in place up to 7 days” — a wear time, not a change frequency.
LCD L33831(opens in a new tab)Medicare allows collagen dressing codes A6021–A6024 only for products with a coding verification published on the PDAC Product Classification List. Ask us for the listing on any collagen product before you dispense it.
DME Supplier Manual, Appendix A (HCPCS descriptors)(opens in a new tab)Policy Article A54563(opens in a new tab)We list silver (Ag) and honey products by their base dressing type. Medicare's surgical dressing LCD lists silver and honey among materials whose safety and effectiveness “have not been established,” and classifies dressings by their clinically predominant component — one made predominantly of such materials isn't considered reasonable and necessary. Code each product by its PDAC listing; choose products on clinical judgment.
LCD L33831(opens in a new tab)Medicare details checked against CMS sources on October 6, 2026. Not billing, coding or legal advice.
Related codes
Codes PCSS carries open their own page; the rest open in the full lookup.
Questions
Answers draw on the CMS descriptor, PCSS's suggested codes and the Medicare notes on this page.
A6021 is a Level II HCPCS code. Its CMS long descriptor reads “Collagen dressing, sterile, size 16 sq. in. or less, each”, and its short descriptor is “Collagen dressing <=16 sq in” (October 2026 Alpha-Numeric HCPCS File, CMS).
PCSS suggests A6021 as the typical HCPCS category for Collagen sheet (2×2, 4×4); Collagen sheet, silver (2×2, 4×4). PCSS's suggested HCPCS categories (July 2026) are for reference only, based on product type and pad size. Confirm final coding with your billing staff.
Medicare allows collagen dressing codes A6021–A6024 only for products with a coding verification published on the PDAC Product Classification List. Ask us for the listing on any collagen product before you dispense it.
LCD L33831 states no change frequency for collagen dressings or fillers. It says they “can stay in place up to 7 days” — a wear time, not a change frequency.
Wholesale portal
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Help: (803) 422-2710View your catalog pricing, save business and ship-to details, and order once Aubrey has countersigned your agreement. Patient-direct orders follow the separate Equipia route described in How to order.
How to order
