CPT code 61583 identifies a craniofacial approach to the anterior cranial fossa for exposure and management of intradural lesions or defects at the skull base. This complex neurosurgical procedure involves unilateral or bilateral craniotomy, frontal lobe elevation or removal when required, and osteotomy of the anterior cranial fossa base. It is used for lesions whose location and size necessitate direct craniofacial access and is relevant for tertiary care centers and specialty neurosurgery practices nationwide.

Key payers included in the scope of this overview are Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise explanation of the clinical intent and operative components of CPT code 61583, plus national payer coverage context, common billing modifiers, and related service-line considerations for hospital-based neurosurgery. The publication summarizes benchmarks and policy-relevant points affecting billing, prior authorization, and site-of-service classification for skull base craniofacial procedures.

This summary is intended to orient clinicians, coding professionals, and policy analysts to the clinical use and billing context of CPT code 61583, clarifying where the procedure is typically performed and why accurate coding matters for care coordination and claims processing.