How to Bill CPT 91301 for Vaccines and Immunization Services

Feb 3, 2026

When to Use CPT Code 91301

CPT 91301 is used for vaccine or immunization-related services, including vaccine administration and vaccine products.

  • •Service type: Immunization
  • •Components: Vaccine product, administration, or both
  • •Who bills it: Physicians, clinics, and qualified healthcare providers

Common scenarios:

  • •Routine childhood immunizations
  • •Adult vaccine administration
  • •Seasonal and preventive vaccinations

Insurance Verification Tips for CPT 91301

  1. •Verify coverage under preventive benefits.
  2. •Confirm age and vaccine-specific requirements.
  3. •Bill administration codes separately when appropriate.
  4. •Track lot numbers and documentation requirements.

Example Case of CPT 91301

A provider administers a vaccine as part of preventive care and documents the vaccine details.
The service is billed as one unit of CPT 91301.

Talos Billing provides end-to-end medical billing services. Want to learn more? Book a call today.

Book a Call