Hepatitis A Vaccine — CPB 0048 | AETNA Coverage Update

Aetna modified CPB 0048, its hepatitis A vaccine coverage policy, effective September 26, 2025. Here's what billing teams need to know.

Aetna, a CVS Health company, updated Clinical Policy Bulletin CPB 0048 covering hepatitis A vaccine reimbursement under CPT codes 90632, 90633, 90634, and 90636. The update expands and clarifies the at-risk populations that qualify for covered vaccination — including HCT recipients, individuals experiencing homelessness, and pregnant women with specific risk factors. If your practice bills hepatitis A vaccine for any of these groups, this coverage policy directly affects your claim approval rate.

Quick-Reference Table

Aetna Hepatitis A Vaccine Coverage Criteria and Medical Necessity Requirements 2025

The Aetna hepatitis A vaccine coverage policy under CPB 0048 ties medical necessity to CDC Advisory Committee on Immunization Practices (ACIP) and American Academy of Pediatrics (AAP) recommendations. Coverage is not universal — Aetna covers the vaccine for specific at-risk populations. Billing outside those populations means claim denial.

Aetna's CPB 0048 Aetna system recognizes two broad coverage pathways: preventive vaccination for at-risk groups, and post-exposure prophylaxis when the vaccine is given within two weeks of hepatitis A exposure.

For preventive vaccination, medical necessity is established when the patient falls into one of 13 defined categories. These include all children ages 12 to 23 months, unvaccinated children and adolescents ages 2 through 18, individuals age one or older who are homeless, and individuals age one or older with HIV infection regardless of immune suppression level. The policy covers pregnant women at risk for HAV infection or at risk for a severe outcome — including those with chronic liver disease or HIV.

Hematopoietic cell transplant (HCT) recipients are a notable addition. Patients who received vaccines before their HCT may be vaccinated or revaccinated after transplant — regardless of the stem cell source. This matters if you bill for transplant-adjacent care. CPT 38240 and 38241 are listed as related codes.

Hepatitis A vaccine billing is also covered for international travelers, men who have sex with men (MSM), injection and illicit drug users, occupational risk groups (primate handlers, research lab workers with HAV material), and individuals with chronic liver disease. That last group is broad — it includes HBV, HCV, cirrhosis, fatty liver disease, alcoholic liver disease, autoimmune hepatitis, and any patient with ALT (CPT 84466) or AST (CPT 84450) persistently above twice the upper limit of normal.

One thing to flag for your billing team: most Aetna HMO plans exclude coverage of immunizations required for travel or work. That applies to international traveler and occupational risk vaccinations. Check the patient's benefit plan before submitting claims under those indications.

Prior authorization requirements are not explicitly listed in CPB 0048 for routine preventive hepatitis A vaccination. That said, HMO plan exclusions create a de facto denial pathway for travel and occupational indications. If you're not sure how a specific patient's plan handles this, confirm with the payer or talk to your compliance officer before the September 26, 2025 effective date.

Aetna Hepatitis A Vaccine Exclusions and Non-Covered Indications

The policy doesn't label any indication as experimental or investigational. But there are real coverage gaps.

HMO plan exclusions are the main risk area. Travel-related and occupational vaccinations are carved out of most Aetna HMO benefit plans. This isn't a medical necessity issue — it's a benefit design issue. Your front desk team needs to verify the patient's plan type before scheduling the vaccine visit.

The post-exposure pathway is time-limited. Aetna covers the vaccine for post-exposure prophylaxis only when started within two weeks of hepatitis A exposure. Claims submitted for prophylaxis outside that window will not meet medical necessity criteria.

Coverage Indications at a Glance

Aetna Hepatitis A Vaccine Billing Guidelines and Action Items 2025

Hepatitis A vaccine billing under CPB 0048 is straightforward when the documentation matches the indication. The claim denials happen when the ICD-10 code doesn't map cleanly to one of the 13 covered populations — or when a provider bills a travel or occupational indication for an HMO member.

Here's what to do before and after September 26, 2025:

If any of the expanded indications — particularly HCT recipients, pregnant women with HIV, or adults in high-risk congregate settings — represent a significant share of your patient mix, talk to your compliance officer before the September 26, 2025 effective date. The criteria in this version of CPB 0048 are specific, and documentation requirements follow closely from them.

CPT, HCPCS, and ICD-10 Codes for Hepatitis A Vaccine Under CPB 0048

Covered CPT Codes (When Selection Criteria Are Met)

Related CPT and HCPCS Codes

Key ICD-10-CM Diagnosis Codes