CommercialCoverageMedium impact
Orthopoxvirus Vaccines (CPB 0644, reviewed 2025-12-15)
Aetna·Allergy & Immunology, Infectious Disease, Occupational Medicine +4 more·Medical Policy
Effective date
Dec 15, 2025
We identified it
Aug 12, 2026
Summary
Aetna updated its orthopoxvirus vaccine policy (CPB 0644) effective 2025-12-15, establishing medical necessity criteria for smallpox and mpox vaccinations. The policy covers pre-exposure vaccination for high-risk groups (laboratory workers, healthcare workers, public health personnel), post-exposure vaccination for exposed individuals, and mpox vaccination for persons with specific risk factors. Billing teams must ensure proper CPT code selection (90611, 90622) and ICD-10 diagnosis codes are used based on the patient's risk category and vaccination indication.
Action Required
By 2025-12-15: Billing team must update claim submission protocols to require proper documentation of medical necessity for orthopoxvirus vaccines. (1) For CPT 90611 (JYNNEOS vaccine) and CPT 90622 (ACAM2000 vaccine): Verify patient meets one of Aetna's covered indications before processing claims. (2) Link appropriate ICD-10 diagnosis codes: Use Z23 for pre-exposure smallpox vaccination, Z20.2 or Z20.89 for exposure scenarios, and Z72.51/Z72.52/Z72.53 for mpox risk factors. (3) Update billing system to flag claims lacking proper risk category documentation and route to providers for completion. (4) Train front-desk and billing staff that smallpox/mpox vaccination for general population (without documented risk factors) is non-covered per this policy. (5) Note: Verify individual plan documents as most plans exclude work/travel-required vaccinations. Failure to document medical necessity will result in claim denials.