CPT code 99602 represents an additional hour of a clinician visit to a patient’s home for infusion therapy or administration of a specialty drug after the initial two-hour visit. This code matters nationally as home-based infusion and specialty drug administration grow, shifting care from outpatient facilities to the home and creating distinct billing and resource considerations tied to time-based services.

Key payers covered in the analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise explanation of the clinical service captured by the code, which payers commonly reimburse or recognize the code, typical sites of service, and commonly associated billing modifiers. The publication also summarizes benchmark reimbursement patterns, documentation and coding considerations specific to time-based home infusion services, and relevant policy updates affecting coverage and payment pathways for home-administered specialty therapies.

This national overview is intended for coding professionals, billing managers, and clinical administrators seeking a clear reference on how CPT code 99602 is used, what clinical scenarios it describes, and which major payers to consider when aligning clinical workflows and claims processes.