G8483 HCPCS Level II code: Influenza immunization was not administered for reasons documented by clinician (e.g., patient allergy or other medical reasons, patient declined or other…
CMS terminated G8483: its last date of service was Dec 31, 2024. It stays here for looking up older claims; newer services need a current code.
Official description
G8483Influenza immunization was not administered for reasons documented by clinician (e.g., patient allergy or other medical reasons, patient declined or other patient reasons, vaccine not available or other system reasons)
Short description: Flu imm no admin doc rea
HCPCS · United States
Medicare details
The indicators CMS publishes with G8483 in its October 2026 file. They describe Medicare’s handling, not another payer’s.
- Medicare coverage
- Carrier judgment
- Medicare pricing
- Service not separately priced by Part B (e.g., services not covered, bundled, used by Part A only, etc.)
- Type of service
- Medical care
- BETOS category
- Specialist - other
- Added
- Jan 1, 2008
- Terminated after
- Dec 31, 2024
Where G8483 sits
- 1G codesProcedures and professional services
- 2Terminated G8483Influenza immunization was not administered for reasons documented by clinician (e.g., patient allergy or other medical reasons, patient declined or other patient reasons, vaccine not available or other system reasons)
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
Is HCPCS code G8483 still valid?
No. CMS terminated G8483; its last date of service was Dec 31, 2024. It is listed for looking up services from before then. Use a current code for newer services.
Does Medicare cover G8483?
CMS lists G8483’s Medicare coverage as “Carrier judgment” and its pricing as “Service not separately priced by Part B (e.g., services not covered, bundled, used by Part A only, etc.)”. 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 G8483
All G codesG8474Angiotensin converting enzyme (ace) inhibitor or angiotensin receptor blocker (arb) therapy not prescribed for reasons documented by the clinician (e.g., allergy, intolerance…G8475Angiotensin converting enzyme (ace) inhibitor or angiotensin receptor blocker (arb) therapy not prescribed, reason not givenG8476Most recent blood pressure has a systolic measurement of < 140 mmhg and a diastolic measurement of < 90 mmhgG8477Most recent blood pressure has a systolic measurement of >= 140 mmhg and/or a diastolic measurement of >= 90 mmhgG8478Blood pressure measurement not performed or documented, reason not givenG8482Influenza immunization administered or previously receivedG8484Influenza immunization was not administered, reason not givenG8485I intend to report the diabetes mellitus (dm) measures groupG8486I intend to report the preventive care measures groupG8487I intend to report the chronic kidney disease (ckd) measures groupG8489I intend to report the coronary artery disease (cad) measures groupG8490I intend to report the rheumatoid arthritis (ra) measures group