Summary & Overview
HCPCS Level II M1470: Documentation of Medical Reason for Not Administering Hepatitis B Vaccine
HCPCS Level II code M1470 denotes documentation of the medical reason(s) for not administering the hepatitis B vaccine, for example a prior anaphylactic reaction to the vaccine. Nationally, accurate capture of medical exemptions to immunizations is important for patient safety, quality measurement, and recordkeeping across outpatient and public health settings. This code enables clinicians to record legitimate clinical contraindications or serious adverse reactions that preclude vaccination.
Key payers addressed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise explanation of the code’s clinical intent and service context, guidance on typical sites of service where the code is used, and an outline of where this documentation appears in the service line. The publication also provides benchmarking context and policy implications related to immunization documentation and exemption reporting at a national level.
The content covers practical considerations for billing and reporting the documented medical reason, the role of M1470 in quality and safety records, and common related coding areas. Data not available in the input is noted explicitly where applicable.
Billing Code Overview
HCPCS Level II code M1470 documents the medical reason(s) for not administering the hepatitis B vaccine, such as a prior anaphylactic reaction to the vaccine. This code captures clinician documentation explaining why the hepatitis B immunization was withheld for a patient.
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Service type: Vaccine administration decision documentation / immunization exception reporting
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Typical site of service: Outpatient clinic, primary care office, public health clinic, or other ambulatory care settings where immunization counseling and documentation occur
Clinical & Coding Specifications
Clinical Context
A patient presents to a primary care clinic or occupational health clinic for routine immunization review or pre-employment clearance. During vaccine screening, the patient reports a prior immediate hypersensitivity reaction to a hepatitis B vaccine or documents a severe allergy such as anaphylaxis attributed to a prior hepatitis B vaccination. The clinician reviews the immunization history, assesses contraindications and precautions, documents the medical reason(s) for not administering the hepatitis B vaccine, and counsels the patient about alternatives (e.g., serologic testing for immunity, referral to allergy/immunology). Documentation includes the specific medical reason (for example, prior anaphylaxis to hepatitis B vaccine), date and details of the adverse event, informed refusal if applicable, and the clinical decision not to vaccinate. Typical workflow steps: vaccine screening questionnaire → clinical history and allergy assessment → review of prior records or vaccine adverse event report → clinician documentation of medical reason(s) for not administering the hepatitis B vaccine using billing code M1470 → update immunization record and plan follow-up as indicated.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
25 | Significant, separately identifiable evaluation and management service by the same physician on the day of a procedure | Use when an E/M visit is performed in addition to documentation of non-administration and meets E/M criteria |