M1300 Influenza 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 descriptor: Flu imm no admin doc rea

✓ Active HCPCS Level II 2026
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M1300 is the HCPCS Level II code for Influenza 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) (2026). It belongs to Section M — Medical Services. Under Medicare, its coverage status is: Carrier judgment. Part B pricing methodology: Not separately priced by Part B.

Classification & CMS Attributes

Medicare Coverage
Carrier judgment (code C)
Part B Pricing
Not separately priced by Part B (indicator 00)
Type of Service
Medical care
Effective Date
2024-01-01
2026 Maintenance
No change this year

References

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Reference M1300 with the canonical source and edition:

M1300 — Influenza 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). ICD-10 Coding Pro (HCPCS Level II 2026). https://icd10codingpro.com/hcpcs-codes/M1300

Canonical URL: https://icd10codingpro.com/hcpcs-codes/M1300

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Reviewed by Prajwal Shrestha, CPC, CRC
Certified Professional Coder (CPC) and Certified Risk Adjustment Coder (CRC) · AAPC Member ID 01997614 · About · Editorial policy · Content last reviewed: 2026-01-01

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