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New HCPCS for the Administration of the Influenza A (H1N1) Virus Vaccine

For dates of service on after September 1, 2009, Medicare has created two new HCPC codes for billing for the administration of the H1N1 Virus Vaccine. 

  • G9141 – Influenza A (H1N1) immunization administration (includes the physician counseling the patient/family)
  • G9142 – Influenza A (H1N1) vaccine, any route of administration

Since the vaccine is being made available to providers at no cost, Medicare will not pay providers for the vaccine.  Please refer to CMS MLN Matters number: SE0920 for more information.