CPT 61590 Infratemporal Preauricular Reimbursement | OpenPayer

Summary & Overview

CPT 61590: Infratemporal Preauricular Approach to Middle Cranial Fossa

CPT code 61590 identifies an infratemporal preauricular (transparotid) approach to the middle cranial fossa for exposure of lesions or defects at the skull base. The code covers open skull-base neurosurgical access techniques and is relevant for cranial neurosurgery practices, hospital surgical departments, and payer coverage policies involving complex skull-base procedures. Nationally, accurate coding of skull-base approaches affects facility and professional reimbursement, utilization tracking, and quality measurement for high-complexity neurosurgical care.

Key payers included in this analysis are Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise clinical context for when CPT code 61590 is used, the typical service setting, and how this code fits into broader billing workflows for skull-base surgery. The publication also covers benchmark elements commonly reviewed by payers and providers, such as service definitions, typical sites of service, and related coding considerations. Data not provided in the input (for example, specific ICD-10 pairings or associated taxonomies) is noted as unavailable.

AetnaBlue Cross Blue ShieldCigna HealthUnitedHealthcareMedicare61590CPTskull base surgerymiddle cranial fossainfratemporal approachneurosurgeryoperating roomtransparotid

Billing Code Overview

CPT code 61590 describes a surgical approach to the middle cranial fossa using an infratemporal preauricular (transparotid) approach to expose a lesion or defect at the base of the skull. The procedure may be combined with a transtemporal approach when lesions extend posteriorly into the temporal bone.

Service type: Skull base neurosurgical approach / open cranial surgery

Typical site of service: Operating room (inpatient or outpatient surgical setting depending on lesion complexity and patient needs)

Data not available in the input for Associated Taxonomies, ICD-10 Diagnoses, and Related Codes.

Clinical & Coding Specifications

Clinical Context

A 54-year-old patient presents with progressive hearing loss and intermittent cranial neuropathic pain. Imaging (MRI and CT) demonstrates a petroclival meningioma centered at the middle cranial fossa with extension toward the temporal bone and involvement of structures near the internal auditory canal. The neurosurgical team schedules a skull base resection using an infratemporal preauricular (transparotid) approach to expose and resect the lesion at the base of skull. The workflow includes preoperative multidisciplinary planning with neurosurgery and otolaryngology, preoperative neuroimaging review, informed consent discussing potential facial nerve and hearing risks, intraoperative neurophysiologic monitoring, general endotracheal anesthesia, possible combined transtemporal exposure if the tumor extends posteriorly, and postoperative ICU or step-down monitoring for cranial nerve function, wound care, and imaging surveillance.

Coding Specifications

Modifier	Description	When to Use
`62`	Two surgeons	Use when two qualified surgeons work together as primary surgeons for complex skull base exposure or resection.
`80`	Assistant surgeon	Use when a surgical assistant participates in the procedure (assistant surgeon).

CPT 61592: Orbitocranial Approach to Middle Cranial Fossa

CPT-61591-MIDDLE-CRANIAL-FOSSA-INFRATEMPORAL-PREAURICULAR-APPROACH

CPT 61591: Middle Cranial Fossa Infratemporal Preauricular Approach

Taxonomy Code	Specialty	Notes
207RH0000X	Neurological Surgery	Primary specialty performing skull base and middle cranial fossa approaches.
207L00000X	Otolaryngology	Skull base and lateral skull base approaches in partnership with neurosurgery.
2080P0207X	Head and Neck Surgical Oncology	May be involved for tumors with complex cranial base involvement.
2084N0400X	Neurocritical Care	Postoperative management of neurosurgical patients in ICU settings.
207VP0000X	Vascular Neurology	Consultation when vascular involvement or complex neurovascular reconstruction is anticipated.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`C71.4`	Brain stem and other parts of brain	Primary skull base or adjacent intracranial neoplasms requiring middle cranial fossa access when tumor location involves temporal/brainstem-adjacent structures.
`C79.31`	Secondary malignant neoplasm of brain	Metastatic lesions to the middle cranial fossa requiring surgical access for resection or decompression.
`D32.0`	Benign neoplasm of cerebral meninges	Meningiomas of the middle cranial fossa/petroclival region commonly approached via infratemporal preauricular route.
`G51.0`	Bell's palsy	Not an indication for this approach but included when facial nerve decompression is performed for skull base lesions causing neuropathy.
`H60.5`	Otitis externa, unspecified	Included when combined otologic procedures or transtemporal approaches address temporal bone extension of skull base lesions.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`61590`	Craniectomy or craniotomy, middle cranial fossa; infratemporal (transparotid) preauricular approach	Primary code describing the infratemporal preauricular exposure to the middle cranial fossa for skull base lesion access.
`61610`	Craniectomy or craniotomy, posterior cranial fossa; foramen magnum or suboccipital approach	Related when tumor extends posteriorly requiring combined transtemporal or posterior fossa exposure.
`69990`	Unlisted procedure, head or neck	Use for unusual adjunctive procedures or devices not described by a specific CPT when performed with skull base surgery.
`61876`	Excision or drainage of an intracranial lesion; cortical or subcortical (supratentorial)	May be performed for lesion resection components depending on tumor location and extent.
`61595`	Craniectomy or craniotomy; lateral skull base approach (e.g., middle fossa craniotomy)	Alternative or complementary middle fossa/lateral skull base approach codes depending on the exact exposure and work performed.