AP HCPCS Level II modifier: Determination of refractive state was not performed in the course of diagnostic ophthalmological examination
AP is a HCPCS Level II modifier: “Determination of refractive state was not performed in the course of diagnostic ophthalmological examination.” It adds this detail to the code it is reported with.
Official description
APDetermination of refractive state was not performed in the course of diagnostic ophthalmological examination
Short description: No dtmn of refractive state
HCPCS · United States
Medicare details
The indicators CMS publishes with AP in its October 2026 file. They describe Medicare’s handling, not another payer’s.
- Medicare coverage
- Carrier judgment
- Added
- Jan 1, 1984
Where AP sits
- 1GroupHCPCS modifiers
- 2Modifier APDetermination of refractive state was not performed in the course of diagnostic ophthalmological examination
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 AP mean?
AP is the HCPCS code for “Determination of refractive state was not performed in the course of diagnostic ophthalmological examination” in CMS’s HCPCS Level II October 2026 release.
Where is AP in the HCPCS Level II list?
AP is listed under Modifiers.
Does Medicare cover AP?
CMS lists AP’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 AP
All modifiersAHClinical psychologistAIPrincipal physician of recordAJClinical social workerAKNon participating physicianAMPhysician, team member serviceAOAlternate payment method declined by provider of serviceAQPhysician providing a service in an unlisted health professional shortage area (hpsa)ARPhysician provider services in a physician scarcity areaASPhysician assistant, nurse practitioner, or clinical nurse specialist services for assistant at surgeryATAcute treatment (this modifier should be used when reporting service 98940, 98941, 98942)AUItem furnished in conjunction with a urological, ostomy, or tracheostomy supplyAVItem furnished in conjunction with a prosthetic device, prosthetic or orthotic