Summary & Overview
CPT 90739: Adult Hepatitis B Vaccine with CpG Adjuvant, Intramuscular
CPT code 90739 denotes an adult-dose, intramuscular hepatitis B vaccine that contains a CpG synthetic DNA adjuvant to boost immune response and is offered in two- or four-dose schedules. This code identifies a specific vaccine product and its administration, making it relevant for immunization programs, payer coverage policies, and clinical practices involved in adult preventive care. Nationally, hepatitis B vaccination remains a public health priority for preventing liver disease and reducing transmission.
Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare and Medicare. Readers will find an overview of clinical context for the vaccine, typical sites of service for administration, and the coding specifics for billing and claims processing. The publication outlines payer coverage considerations, common billing modifiers associated with vaccine administration where applicable, and expectations for documentation and claim submission. It also summarizes benchmarking and policy updates relevant to vaccine coding and reimbursement practices at a national level.
This summary serves clinicians, billing professionals, and policy analysts seeking concise guidance on CPT code 90739, its clinical role in adult hepatitis B prevention, and the payer landscape for immunization services.
Billing Code Overview
CPT code 90739 describes an adult-dose hepatitis B vaccine formulation administered intramuscularly that includes a synthetic DNA adjuvant (CpG) to enhance immune response. The product is intended to protect against hepatitis B and may be provided on a two-dose or four-dose schedule depending on the vaccine regimen.
Service type: Vaccine administration (preventive immunization)
Typical site of service: Outpatient clinics, primary care offices, public health clinics, and other ambulatory care settings where routine adult vaccinations are administered.
Clinical & Coding Specifications
Clinical Context
A 35-year-old adult presents to an outpatient primary care clinic for hepatitis B immunization after occupational exposure risk assessment identified susceptibility. The patient has no prior documented hepatitis B vaccination series; serology shows nonimmune status (negative HBsAg and anti-HBs). The clinician reviews contraindications and obtains informed consent. The clinic nurse prepares the adult-dosage hepatitis B vaccine containing a synthetic CpG adjuvant and administers it intramuscularly in the deltoid. The vaccine schedule is either a two-dose or four-dose series depending on product-specific labeling and patient factors. The visit includes vaccine administration, documentation of lot number and manufacturer, billing with 90739, and entry into the state immunization registry. Typical encounters occur in outpatient primary care clinics, occupational health clinics, community vaccine clinics, and employee health departments. Typical patient workflow: eligibility assessment → consent and screening for contraindications → vaccine preparation → intramuscular administration → 15–30 minute observation for adverse reaction → documentation and scheduling of subsequent dose(s).
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
25 | Significant, separately identifiable evaluation and management service by the same physician on the same day of procedure | Use when an E/M visit is performed in addition to vaccine administration for a separate issue documented in the chart. |