CPT 90632: Adult Hepatitis A Vaccine, Intramuscular

CPT code 90632 denotes the adult-dose hepatitis A vaccine delivered via intramuscular injection. As a preventive immunization, this code is used across outpatient clinics, primary care practices, public health settings, and pharmacies to reduce the spread and clinical burden of hepatitis A. Nationally, hepatitis A vaccination is a routine component of adult preventive care and public health immunization programs, making accurate coding important for clinical documentation and payer processing.

Key payers discussed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of reimbursement benchmarks, coding policy considerations, and clinical context for use of the adult hepatitis A vaccine. The publication highlights typical sites of service, common billing modifiers (listed separately), and typical administrative considerations relevant to vaccine claims. Data not available in the input for associated taxonomies, ICD-10 diagnoses, and related codes is noted where applicable.

This summary provides clinicians, billing professionals, and policy analysts with the clinical meaning of CPT code 90632, payer coverage landscape, and the types of benchmarks and policy updates covered in the full publication.

Billing Code Overview

CPT code 90632 represents an adult-dose hepatitis A vaccine administered intramuscularly to protect against hepatitis A, a viral liver infection. This service is a preventive immunization typically provided as a single intramuscular injection for adult patients.

Service Type: Vaccine administration / Immunization

Typical Site of Service: Outpatient clinic, primary care office, public health clinic, or pharmacy-based immunization setting

Clinical Context

A typical patient is an adult receiving an intramuscular hepatitis A vaccine (90632) during a preventive care or travel medicine visit. The patient presents to an outpatient clinic, primary care office, occupational health clinic, or urgent care seeking routine immunization or pre-travel vaccination. The clinical workflow includes verification of immunization history, screening for contraindications (e.g., severe allergic reaction to a prior dose or vaccine component), informed consent, preparation of the adult-dose hepatitis A vaccine, administration intramuscularly (commonly deltoid), and documentation of vaccine lot number, manufacturer, expiration date, route, site, and VIS edition date. Post-vaccination observation for immediate adverse reactions (typically 15 minutes) is completed. Billing uses 90632 for the adult hepatitis A vaccine; an evaluation-and-management visit may be billed separately when appropriate with the correct modifier to indicate a significant, separately identifiable service.

Coding Specifications

Modifier	Description	When to Use
`25`	Significant, separately identifiable E/M service by the same physician on the same day	Use when a qualifying E/M visit is performed in addition to vaccine administration and is documented as separate and significant.

Taxonomy Code	Specialty	Notes
`207Q00000X`	Family Medicine	Common primary care providers administering adult vaccines.
`208D00000X`	General Practice	Office-based vaccination during routine visits.
`208000000X`	Internal Medicine	Adult vaccinations provided in primary care settings.
`3336C0002X`	Preventive Medicine	Travel and preventive clinics administering hepatitis A vaccine.
`363L00000X`	Occupational Medicine	Workplace or occupational health administration of vaccines.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`Z23`	Encounter for immunization	Primary diagnosis code used to report administration of vaccines including `90632`.
`Z20.8`	Contact with and (suspected) exposure to other communicable diseases	Used when vaccination is given due to possible exposure risk.
`Z29.1`	Prophylactic vaccination and inoculation	Used to indicate preventive vaccination when a more specific immunization code is not used.
`Z76.89`	Persons encountering health services in other specified circumstances	Used for immunizations given during visits such as travel clinics or occupational screenings when appropriate.
`Z75.3`	Diagnostic and screening services related to travel and migration	Used when vaccine is administered as part of pre-travel evaluation and clearance.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`90471`	Immunization administration (includes percutaneous, intradermal, subcutaneous, or intramuscular injections); one vaccine (single or combination vaccine/toxoid)	Used to bill the administration component when separate administration coding is required in addition to the vaccine product code for some payors.
`90472`	Immunization administration, each additional vaccine (single or combination vaccine/toxoid)	Used when multiple vaccines are given during the same encounter in addition to the primary vaccine `90632`.
`90746`	Hepatitis A vaccine, pediatric/adolescent dosage, intramuscular, for intramuscular use (Note: different dosage than `90632`)	Related vaccine code for pediatric dosing; relevant when determining correct product coding by patient age.
`G0008`	Administration of influenza vaccine (Medicare specific)	Example of another vaccine administration code used in adult immunization workflow; demonstrates parallel billing practices for other vaccines.
`99213`	Office or other outpatient visit for the evaluation and management of an established patient, moderate complexity	Common E/M code that may be billed separately with appropriate modifier `25` when an E/M service is performed on the same day as `90632`.

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Summary & Overview