M1308 — Influenza immunization was not administered, reason not given
M1308 is a HCPCS Level II code for influenza immunization was not administered, reason not given. It belongs to the Medical Services section. Whether Medicare pays it depends on the coverage rule below.
Medicare coverage: Carrier judgment
Coverage is decided by your Medicare contractor, not by national policy. Whether this is paid depends on the LCD for your jurisdiction and on what the documentation supports.
From the coverage field of the CMS Alpha-Numeric HCPCS File, release 2026Q3-Jul. This states Medicare’s position on the code, not on your particular claim.
Physician fee schedule statusM
Measurement code. Used for reporting purposes only; never paid.
Global period: XXX
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The CMS record for M1308
- Long descriptor
- Influenza immunization was not administered, reason not given
- Short descriptor
- Flu immunize no admin
- Added
- January 1, 2024
- BETOS
- Z2
- Pricing indicator
- 00 — Not priced by Part B
The official wording. This is what the code means.
CMS's 28-character form, which is what shows up on a remittance advice.
When CMS introduced the code.
Berenson-Eggers Type of Service — CMS's own analytic grouping.
Service not separately priced by Part B — not covered, bundled into another service, or used by Part A only.
Codes adjacent to M1308
HCPCS has no hierarchy — related items simply sit next to each other in the numbering. If M1308 is not quite right, the correct code is very often within a few positions of it.
- M1300Influenza 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)
- M1301Patient identified as a tobacco user received tobacco cessation intervention during the measurement period or in the six months prior to the measurement period (counseling and/or pharmacotherapy)
- M1302Screening, diagnostic, film digital or digital breast tomosynthesis (3d) mammography results documented and reviewed
- M1303Hospice services provided to patient any time during the measurement period
- M1304Patient did not receive any pneumococcal conjugate or polysaccharide vaccine on or after their 19th birthday and before the end of the measurement period
- M1305Patient received any pneumococcal conjugate or polysaccharide vaccine on or after their 19th birthday and before the end of the measurement period
- M1306Patient had anaphylaxis due to the pneumococcal vaccine any time during or before the measurement period
- M1307Documentation stating the patient has received or is currently receiving palliative or hospice care
- M1309Palliative care services provided to patient any time during the measurement period
- M1310Patient screened for tobacco use and received tobacco cessation intervention during the measurement period or in the six months prior to the measurement period (counseling, pharmacotherapy, or both), if identified as a tobacco user
- M1311Anaphylaxis due to the vaccine on or before the date of the encounter
- M1312Patient not screened for tobacco use
- M1313Tobacco screening not performed or tobacco cessation intervention not provided during the measurement period or in the six months prior to the measurement period
- M1314Bmi not documented and no reason is given
- M1315Colorectal cancer screening results were not documented and reviewed; reason not otherwise specified
- M1316Current tobacco non-user
Questions about M1308
What is HCPCS code M1308?
M1308 is a HCPCS Level II code for influenza immunization was not administered, reason not given. It sits in the Medical Services section.
Does Medicare cover M1308?
The CMS HCPCS file marks M1308 as "Carrier judgment". Coverage is decided by your Medicare contractor, not by national policy. Whether this is paid depends on the LCD for your jurisdiction and on what the documentation supports.
How is M1308 paid under the physician fee schedule?
M1308 carries PFS status code M. Measurement code. Used for reporting purposes only; never paid.