HCPCS Code A6021: Collagen dressing, sterile, size 16 sq in or less, each

Maximize reimbursement for HCPCS A6021. This guide covers documentation, units, and modifiers for collagen dressings to help you bill correctly and avoid denials.

Use Code

Frequently asked questions

There is no single CPT code solely for “collagen application.” Clinicians typically report the visit/debridement (e.g., selective debridement 97597/97598 or surgical debridement 11042–11047 when performed) and bill the supply with HCPCS A6021 (or A6022). Follow payer policy and the surgical dressings benefit.

Use A6021 for collagen dressing, sterile, size 16 sq in or less, each. For larger pieces, A6022 applies.

“Wound cleaning” alone is generally part of routine care. If debridement is performed and documented, consider 97597/97598 (selective) or 11042–11047 (surgical), per clinical specifics and payer rules.