Injectable Drugs Coding

Using the correct combination of codes is the key to minimizing delays in claims processing. Please ensure that revenue codes and procedure codes reflect the diagnoses and services rendered. Third-digit subcategories for the revenue code are included in the National Uniform Billing Committee Official UB-04 Data Specifications Manual.

Commonly Billed Services

The matrix below depicts commonly billed services and acceptable code ranges that correspond to HMSA's claims processing requirements for injectable drugs. The matrix represents a range of possible combinations and should not be viewed as comprehensive.

Administration

Revenue CodeDescriptionLevel of CodeCodeDescription
771Preventive care services: vaccine administrationCPT90471Immunization administration; one vaccine
   90472each additional vaccine (list separately in addition to code for primary procedure)
  HCPCSG0008Administration of influenza virus vaccine when no physician fee schedule service on same day
   G0009Administration of pneumococcal vaccine when no physician fee schedule service on same day
   G0010Administration of hepatitis B vaccine when no physician fee schedule service on same day
94xOther therapeutic service: generalCPT90772Therapeutic, prophylactic or diagnostic injection (specify substance or drug); subcutaneous or intramuscular
   90773intra-arterial
   90774intravenous push, single or initial substance/drug
   90775each additional sequential intravenous push of a new substance/drug (List separately in addition to code for primary procedure)
   90779Unlisted therapeutic, prophylactic or diagnostic intravenous or intra-arterial injection or infusion

Notes:

  • Effective August 1, 2001, administration of the vaccination is paid separately from the vaccine itself
  • G codes are used for Medicare-based plans, such as 65C Plus. Coding: Injectable Drugs

Incidental Drugs and Supplies

Revenue CodeDescriptionLevel of CodeCodeDescription
25x PharmacyHCPCS Use HCPCS codes that describe the services rendered
27xMedical/surgical supplies and devicesHCPCS Use HCPCS codes that describe the services rendered

Incidental drugs and supplies are pharmaceutical items used to deliver the service. These items are included in the administration fee and are not reimbursed separately.

Drugs Requiring Specific Identification

Revenue CodeDescriptionLevel of CodeCodeDescription
634Erythropoietin, less than 10,000 unitsHCPCSJ0885Injection, Erythropoietin (for non-ESRD use), per 1,000 units
635Erythropoietin, more than or equal to 10,000 unitsHCPCSJ0885Injection, Erythropoietin (for non-ESRD use), per 1,000 units
636Drugs requiring detailed codingHCPCSJ1442Injection, filgrastim (G-CSF), excludes biosimilars, 1 mcg
   J3490Unclassified drugs

Notes:

  • Drugs requiring specific identification must be billed separately
  • When unlisted/NOC (not otherwise classified) J codes are used, enter the corresponding National Drug Code (NDC) information in form locator 43 of the UB-04. Refer to Injectable Drugs J Codes for more information.

Revision History

Date Nature of Revision
08/03/2026

Migrated to new platform