HCPCS Level II · Transportation, medical and surgical supplies
A4421Ostomy supply; miscellaneous
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Source: CMS HCPCS quarterly update, October 2026. Page updated September 29, 2026.
About A4421
A4421 is an HCPCS Level II code in the A series (transportation, medical and surgical supplies), describing ostomy supply; miscellaneous.
It was added to HCPCS effective 01/01/1985, and its current record took effect 01/01/2018.
Its Medicare coverage code is "C", meaning coverage is left to the Medicare contractor's judgment.
Details
- Short description
- Ostomy supply misc
- Date added
- 01/01/1985
- Action effective
- 01/01/2018
- BETOS
- D1F
Related A44xx codes
- A4400Ostomy irrigation set
- A4402Lubricant, per ounce
- A4404Ostomy ring, each
- A4405Ostomy skin barrier, non-pectin based, paste, per ounce
- A4406Ostomy skin barrier, pectin-based, paste, per ounce
- A4407Ostomy skin barrier, with flange (solid, flexible, or accordion), extended wear, with built-in convexity, 4 x 4 inches or smaller, each
- A4408Ostomy skin barrier, with flange (solid, flexible or accordion), extended wear, with built-in convexity, larger than 4 x 4 inches, each
- A4409Ostomy skin barrier, with flange (solid, flexible or accordion), extended wear, without built-in convexity, 4 x 4 inches or smaller, each
- A4410Ostomy skin barrier, with flange (solid, flexible or accordion), extended wear, without built-in convexity, larger than 4 x 4 inches, each
- A4411Ostomy skin barrier, solid 4 x 4 or equivalent, extended wear, with built-in convexity, each
- A4412Ostomy pouch, drainable, high output, for use on a barrier with flange (2 piece system), without filter, each
- A4413Ostomy pouch, drainable, high output, for use on a barrier with flange (2 piece system), with filter, each
Common questions about A4421
Is HCPCS A4421 still valid?
- Yes. A4421 is active in the CMS October 2026 HCPCS file.
Does Medicare cover A4421?
- Its coverage code is "C": coverage is left to the Medicare contractor's judgment. Check the local coverage determination for your region.