CPT 61538 Temporal Lobectomy Reimbursement | OpenPayer

Summary & Overview

CPT 61538: Temporal Lobectomy with Intraoperative Electrocorticography

CPT code 61538 represents a temporal lobectomy performed through an elevated skull opening combined with intraoperative electrocorticography (ECoG) to record cortical electrical activity and pinpoint seizure foci. This neurosurgical procedure is a definitive treatment option for selected patients with medically refractory temporal lobe epilepsy and is important for surgical planning and long-term seizure control. Nationally, accurate coding of this service affects hospital billing, surgical case mix, and utilization tracking for complex epilepsy care.

Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise clinical and billing overview of the procedure, typical sites of service, common modifiers and coding considerations (listed separately), and context for how this code fits into surgical epilepsy care pathways. The publication outlines benchmarking and coverage themes relevant to hospitals and neurosurgeons, highlights typical documentation elements tied to intraoperative monitoring, and summarizes policy and reimbursement considerations that commonly affect authorization and claim adjudication. Data not available in the input is noted where applicable.

AetnaBlue Cross Blue ShieldCigna HealthUnitedHealthcareMedicare61538CPTTemporal lobectomyElectrocorticographyNeurosurgeryEpilepsy surgeryIntraoperative monitoringHospital inpatientSurgical coding

Billing Code Overview

CPT code 61538 describes a neurosurgical procedure in which the provider performs a temporal lobectomy with intraoperative electrocorticography (ECoG) to record brain electrical activity and localize seizure onset within the temporal lobe. The procedure involves removal of part of the temporal lobe through an elevated portion of skull bone and use of intraoperative monitoring to help define the epileptogenic zone.

Service type: Neurosurgical resection with intraoperative neurophysiologic monitoring
Typical site of service: Hospital inpatient or hospital outpatient surgical setting where neurosurgical procedures and intraoperative monitoring are performed

Clinical & Coding Specifications

Clinical Context

A 28-year-old patient with medically refractory focal epilepsy localized to the temporal lobe presents for surgical evaluation after failing multiple antiseizure medications. Preoperative workup includes video-electroencephalography (vEEG), high-resolution MRI brain, neuropsychological testing, and scalp EEG suggesting unilateral temporal seizure focus. The patient is scheduled for an anterior temporal lobectomy with intraoperative electrocorticography.

Surgical workflow: Before induction, the neurosurgery and neurophysiology teams review seizure localization data. Under general anesthesia, the surgeon performs a craniotomy over the affected temporal region, elevates the skull bone flap, and resects the epileptogenic anterior temporal lobe. Intraoperative electrocorticography (ECoG) is recorded by the neurophysiology team to identify active epileptiform cortex and guide the extent of resection. Hemostasis and closure follow, with intraoperative pathological specimens sent when indicated. Typical hospital stay is 2–5 days for monitoring and neurologic assessment. Typical site of service is an inpatient or ambulatory surgical center with neurosurgical capabilities. Service type: neurosurgical operative procedure with intraoperative neurophysiology monitoring.

Coding Specifications

Modifier	Description	When to Use
`62`	Two surgeons

CPT 61320: Supratentorial Intracranial Abscess Drainage

CPT-61520-ACOUSTIC-NEUROMA-RESECTION-POSTERIOR-FOSSA

CPT 61520: Excision of Cerebellopontine Angle Tumor (Acoustic Neuroma)

61510-CRANIECTOMY-OR-CRANIOTOMY-FOR-EXCISION-OF-BRAIN-TUMOR

CPT 61510: Craniectomy/Craniotomy for Supratentorial Brain Tumor

CPT-61540-NON-TEMPORAL-BRAIN-LOBECTOMY-CRANIOTOMY

CPT 61540: Non‑temporal Brain Lobectomy via Craniotomy

CPT-61543-HEMISPHERECTOMY-OR-EXTENSIVE-CEREBRAL-RESECTION

CPT 61543: Hemispherectomy or Extensive Cerebral Resection

CPT-61514-CRANIOTOMY-EXCISION-SUPRATENTORIAL-BRAIN-ABSCESS

CPT 61514: Craniotomy for Excision of Supratentorial Brain Abscess

CPT-61315-POSTERIOR-FOSSA-CRANIOTOMY-HEMATOMA-EVACUATION

CPT 61315: Posterior Fossa Craniotomy for Cerebellar Hematoma Evacuation

CPT-61323-DECOMPRESSIVE-CRANIECTOMY-PARTIAL-BRAIN-RESECTION-DURAPLASTY

CPT 61323: Decompressive Craniectomy with Partial Brain Resection and Duraplasty

CPT-61534-CRANIOTOMY-RESECTION-EPILEPTOGENIC-FOCUS

CPT 61534: Craniotomy for Resection of Epileptogenic Focus

CPT-61575-TRANSORAL-SKULL-BASE-BRAIN-STEM-UPPER-SPINAL-CORD-APPROACH

CPT 61575: Transoral Skull Base, Brain Stem, Upper Spinal Cord Approach

Showing 1–10 of 62

Taxonomy Code	Specialty	Notes
`207SG0100X`	Neurological Surgery	Primary specialty performing temporal lobectomy procedures
`207RH0000X`	Neurology	Neurologists manage pre- and postoperative seizure care and surgical candidacy
`2084P0800X`	Clinical Neurophysiology	Specialists who perform intraoperative electrocorticography and EEG monitoring
`2086S0122X`	Neurocritical Care	Physicians who manage perioperative neurologic and critical care needs

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`G40.211`	Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with complex partial seizures, with intractable epilepsy	Typical indication for temporal lobectomy when seizures are refractory to medical therapy
`G40.209`	Localization-related (focal) (partial) symptomatic epilepsy and epileptic syndromes with simple partial seizures, without status epilepticus, not intractable or unspecified	Focal temporal lobe epilepsy variant considered in surgical planning
`G40.909`	Epilepsy, unspecified, not intractable	Used when focal localization is evolving or documentation is nonspecific
`G40.811`	Generalized idiopathic epilepsy and epileptic syndromes, not intractable	Rarely an indication but may appear in differential diagnosis prior to localization
`R56.9`	Unspecified convulsions	Symptom code that may appear during evaluation but is nonspecific

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`61538`	Craniectomy or craniotomy, temporal lobectomy; with intraoperative electrocorticography (ECoG)	Primary procedure described
`95940`	Continuous intraoperative neurophysiology monitoring (multiple modalities), includes interpretation and report	Often performed concurrently to provide continuous monitoring beyond brief ECoG sampling
`95886`	Electroencephalogram; prolonged recording, inpatient (more than 24 hours)	Preoperative prolonged vEEG monitoring to capture seizures for localization
`70553`	MRI brain, with and without contrast, for surgical planning	High-resolution MRI used to identify structural lesions and guide resection
`88305`	Level IV surgical pathology, gross and microscopic examination	Used if tissue is submitted for histopathologic diagnosis during surgery

OpenPayer