Summary & Overview
CPT 90633: Hepatitis A Vaccine, Pediatric Two-Dose
CPT code 90633 represents a pediatric/adolescent formulation of the hepatitis A vaccine administered intramuscularly as part of a two-dose schedule. This preventive immunization code is important nationally because childhood and adolescent vaccination programs reduce hepatitis A incidence, prevent outbreaks, and support population-level immunity. As a routine pediatric vaccine, it appears across ambulatory and public health settings and factors into immunization quality metrics and preventive care reporting.
Key payers addressed in this analysis include Aetna, Blue Cross Blue Shield, Cigna, UnitedHealthcare, and Medicare. Readers will find an overview of clinical context for the vaccine, common sites of service where CPT code 90633 is billed, and the payer landscape relevant to coverage and claims processes. The publication also outlines benchmarks for utilization, coding considerations for two-dose pediatric schedules, and recent policy or reimbursement developments that affect vaccine administration workflows.
The content is aimed at billing professionals, practice managers, and policy analysts seeking concise guidance on how CPT code 90633 is used in clinical and billing workflows, what settings typically administer this vaccine, and which major payers are involved in coverage and claims adjudication. Data not available in the input is noted where applicable.
Billing Code Overview
CPT code 90633 describes a hepatitis A vaccine product formulated for pediatric/adolescent use and administered intramuscularly. The code applies to a two-dose schedule intended to produce active immunity against hepatitis A, a viral infection that affects the liver.
Service Type: Immunization / Vaccine administration
Typical Site of Service: Outpatient clinics, pediatrician offices, community health centers, public health clinics, and other ambulatory care settings
Data not available in the input.
Clinical & Coding Specifications
Clinical Context
A 3-year-old child presents to a pediatric primary care clinic for routine immunizations. The child is due for the second dose of the pediatric/adolescent hepatitis A vaccine series administered intramuscularly. The clinical workflow includes verification of patient identity and immunization record, screening for contraindications (history of severe allergic reaction to any vaccine component or prior dose), obtaining informed consent from the parent or guardian, administration of the intramuscular vaccine (90633) in the deltoid or anterolateral thigh depending on patient size, documentation of lot number, expiration date, site and route, and scheduling follow-up if needed. Post-vaccination observation for 15 minutes for potential immediate adverse reactions is performed. Billing is submitted using the vaccine product code 90633 and may include an appropriate administration code if the payer requires separate billing for administration services.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
00 | Unspecified | Rarely used; generally avoid for vaccines unless payer requires a placeholder |
25 |