Anterior Cranial Fossa Skull Base ProceduresAnterior cranial fossa skull base approach procedures for access to frontal and anterior skull base lesions. CPT codes 61580–61586 enumerate anterior cranial fossa approach techniques and exposure methods used in skull base surgery.Codes 61580–61586Total Codes: 7Updated 5/4/2026Standalone
Middle Cranial Fossa Skull Base ProceduresMiddle cranial fossa skull base approach procedures for access to lateral skull base and petrous region lesions. CPT codes 61590–61592 specify middle cranial fossa approaches with operative exposure descriptors and variations based on extent.Codes 61590–61592Total Codes: 3Updated 5/4/2026Standalone
Posterior Cranial Fossa Skull Base ProceduresPosterior cranial fossa skull base approach procedures targeting cerebellopontine angle and posterior skull base exposures. CPT codes 61595–61598 cover posterior cranial fossa approach techniques with distinctions for exposure extent and adjacent structure management.Codes 61595–61598Total Codes: 4Updated 5/4/2026Standalone