CommercialBilling CodesMedium impact
09.00.10aa, Brachytherapy and Accelerated Whole Breast Irradiation using Three-Dimensional Conformation Radiation Therapy (Independence Administrators)
Independence Blue Cross·Radiation Oncology, Oncology·Medical Policy
Effective date
Jan 1, 2026
We identified it
Jun 19, 2026
Summary
Independence Administrators reissued policy 09.00.10aa with CPT code updates effective 01/01/2026. Three new experimental/investigational CPT codes (77436, 77437, 77439) were added for brachytherapy and accelerated whole breast irradiation, and one terminated code (0394T) was removed. No changes to coverage criteria or medical necessity determinations were made.
Action Required
By 01/01/2026: Billing team must (1) remove CPT code 0394T from all billing systems and encounter forms—this code is no longer valid and claims submitted with it will be denied; (2) add CPT codes 77436, 77437, and 77439 to billing software and mark them as experimental/investigational, requiring documentation of medical necessity and likely prior authorization; (3) update claim submission protocols to flag these three new codes for review before processing; (4) notify radiation oncology providers of the code changes and remind them that supporting medical necessity documentation must be maintained in patient records per policy requirements. Confirm all systems are updated before the effective date to prevent claim rejections.