HCPCS Level II code C2636 denotes a brachytherapy linear source, non-stranded, palladium-103, billed per 1 mm. The code captures the supply unit of palladium-103 linear sources used in interstitial or intracavitary brachytherapy and is relevant to radiation oncology providers and payers managing cancer treatment supplies. Nationally, accurate use of this HCPCS Level II code supports consistent claims processing, supply cost tracking, and clinical documentation for procedures that rely on palladium-103 seeds.

Key payers addressed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of the code’s clinical context, typical site of service, and the types of benchmarking and policy details commonly associated with HCPCS supply codes for brachytherapy isotopes. The publication outlines typical billing practice elements, common modifiers associated with the broader service line (provided in metadata), and notes where input data is not available.

The content emphasizes: what the code represents; why precise coding matters for reimbursement and supply accounting; and what to expect in benchmarking and policy discussions for brachytherapy supply codes. Data not available in the input is identified where applicable.