AB HCPCS Level II modifier: Audiology service furnished personally by an audiologist without a physician/npp order for non-acute hearing assessment unrelated to disequilibrium, or…
AB is a HCPCS Level II modifier: “Audiology service furnished personally by an audiologist without a physician/npp order for non-acute hearing assessment unrelated to disequilibrium, or hearing aids, or examinations for the purpose….” It adds this detail to the code it is reported with.
Official description
ABAudiology service furnished personally by an audiologist without a physician/npp order for non-acute hearing assessment unrelated to disequilibrium, or hearing aids, or examinations for the purpose of prescribing, fitting, or changing hearing aids; service may be performed once every 12 months, per beneficiary
Short description: Aud svs w/o order evry 12mo
HCPCS · United States
Medicare details
The indicators CMS publishes with AB in its October 2026 file. They describe Medicare’s handling, not another payer’s.
- Medicare coverage
- Carrier judgment
- Added
- Jan 1, 2023
Where AB sits
- 1GroupHCPCS modifiers
- 2Modifier ABAudiology service furnished personally by an audiologist without a physician/npp order for non-acute hearing assessment unrelated to disequilibrium, or hearing aids, or examinations for the purpose of prescribing, fitting, or changing hearing aids; service may be performed once every 12 months, per beneficiary
Source and release
- Data release
- HCPCS Level II · October 2026
- Effective date
- Oct 1, 2026
- Publisher
- CMS
This page is built from the HCPCS Level II catalog that Vero Codes reads when it suggests codes: Centers for Medicare & Medicaid Services’s October 2026 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.
Frequently asked questions
What does HCPCS code AB mean?
AB is the HCPCS code for “Audiology service furnished personally by an audiologist without a physician/npp order for non-acute hearing assessment unrelated to disequilibrium, or hearing aids, or examinations for the purpose of prescribing, fitting, or changing hearing aids; service may be performed once every 12 months, per beneficiary” in CMS’s HCPCS Level II October 2026 release.
Where is AB in the HCPCS Level II list?
AB is listed under Modifiers.
Does Medicare cover AB?
CMS lists AB’s Medicare coverage as “Carrier judgment”. Coverage and payment still depend on the patient, the setting, the documentation and the payer.
Which HCPCS Level II release does this page use?
It uses CMS’s October 2026 release, in effect from Oct 1, 2026 to Dec 31, 2026. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.
Codes beside AB
All modifiersA5Dressing for five woundsA6Dressing for six woundsA7Dressing for seven woundsA8Dressing for eight woundsA9Dressing for nine or more woundsAAAnesthesia services performed personally by anesthesiologistACInitial onboarding support payment for access beneficiary enrollment, device/app setup, and care coordination activities; first month only; once per beneficiary per trackADMedical supervision by a physician: more than four concurrent anesthesia proceduresAERegistered dieticianAFSpecialty physicianAGPrimary physicianAHClinical psychologist