CPT code 90749 reports an unlisted vaccine or toxoid procedure when no specific vaccine code exists; it is used to document administration of a vaccine or toxoid not described by other CPT vaccine codes and typically represents an immunization service provided in outpatient clinics, physician offices, public health clinics, or other ambulatory care settings.

For related coverage guidance, see recent payer policy updates: B-Hemolytic Streptococcus Testing, Human Immunodeficiency Virus (HIV) — Coverage Criteria for Testing and Resistance Assays, Hepatitis Testing (A, B, C, D) Coverage Criteria.