HCPCS Level II · Zinc paste bandage and tubular dressing
A6456: zinc paste bandage, 3 in. to under 5 in. wide
A non-elastic, knitted or woven zinc paste impregnated bandage, 3 in. to under 5 in. wide, billed per yard.
Illustration, not the exact productAt a glance
- Billing unit
- Per yard
- Width
- 3 in. to under 5 in. wide
- PCSS products
- 2 lines, 2 sizes
Official CMS descriptor
How CMS describes A6456
“Zinc paste impregnated bandage, non-elastic, knitted/woven, width greater than or equal to three inches and less than five inches, per yard”
- Code
- A6456
- Short descriptor
- Zinc paste band w >=3"<5"/yd
- Code added
- January 1, 2004
- Action effective date
- January 1, 2004
- Status in this file
- Active (no termination date)
PCSS products
What PCSS carries under A6456
PCSS suggests A6456 as the typical HCPCS category for these product sizes.
Unna boot, zinc
Unna boots
Size PCSS suggests A6456 for
- 4 in.
Unna boot, calamine
Unna boots
Size PCSS suggests A6456 for
- 4 in.
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.
Width
Width sets the code
A6456 covers bandages 3 in. to under 5 in. wide, billed “per yard”. It's the only width CMS lists for this bandage type.
Usual change frequency (LCD L33831)
- Unna boots
- Weekly. Covered for venous leg ulcers that are qualifying wounds.
Listed for the PCSS product group, in PCSS's plain-words summary of the LCD.
LCD L33831(opens in a new tab)Medicare notes for A6456
PCSS has no code-specific Medicare notes for A6456. The documentation checklist covers what dressing orders and notes need to show.
Medicare details checked against CMS sources on October 6, 2026. Not billing, coding or legal advice.
Related codes
Zinc paste bandage and tubular dressing: other codes
Codes PCSS carries open their own page; the rest open in the full lookup.
Questions
A6456: common questions
Answers draw on the CMS descriptor, PCSS's suggested codes and the Medicare notes on this page.
What is HCPCS code A6456?
A6456 is a Level II HCPCS code. Its CMS long descriptor reads “Zinc paste impregnated bandage, non-elastic, knitted/woven, width greater than or equal to three inches and less than five inches, per yard”, and its short descriptor is “Zinc paste band w >=3"<5"/yd” (October 2026 Alpha-Numeric HCPCS File, CMS).
What does PCSS suggest A6456 for?
PCSS suggests A6456 as the typical HCPCS category for Unna boot, zinc (4 in.); Unna boot, calamine (4 in.). 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.
How often are Unna boots usually changed under Medicare?
Under LCD L33831, the usual change frequency for Unna boots: Weekly. Covered for venous leg ulcers that are qualifying wounds.
What width does A6456 cover?
A6456 covers bandages 3 in. to under 5 in. wide, billed per yard.
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