CPT code 61305 represents a neurosurgical procedure to inspect the posterior fossa—brain structures at the back of the skull—via a subtentorial approach. This operative inspection is performed when imaging and other diagnostic tests cannot locate a lesion, define a tumor, or explain neurologic impairment. Nationally, the code captures a specialized, primarily hospital-based surgical service that has implications for surgical workflow, inpatient resource use, and specialty reimbursement.

Key payers addressed in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise clinical context for the procedure, common billing modifiers and coding considerations, and where available, typical settings and service lines associated with the code. The publication also summarizes benchmarking and policy-relevant points that influence coverage and billing practice for intracranial posterior fossa inspection.

This summary equips clinicians, coding professionals, and policy analysts with a clear description of the procedure, the primary payers relevant to national billing, and the types of operational and documentation considerations tied to CPT code 61305. Data not available in the input will be noted where appropriate in detailed sections.