61598 Transpetrosal approach/skull
Also known as: transpetrosal approach
Transpetrosal approach to skull base combining temporal bone drilling and lateral skull base exposure for brainstem lesion access.
In Plain Language
Temporal bone surgery for brain access
Clinical Context
Provides combined access to cerebellopontine angle and lateral brainstem. Used for large tumors or vascular lesions requiring extensive exposure.
RVU Breakdown
| Work RVU | 35.62 |
| Total RVU | 35.62 |
Est. Medicare Payment
National estimate based on 2026 CMS PFS Conversion Factor ($33.40). Actual payment varies by locality (GPCI adjustment).
Billing & Documentation
As a surgical CPT code, proper documentation must include the operative report detailing the procedure performed, patient positioning, approach, findings, and any complications. This code has a 90-day global period, which includes the day of the procedure, 1 day preoperative, and 90 days of postoperative care. Ensure the diagnosis code (ICD-10) supports medical necessity for the procedure.
How This Code Compares
With a work RVU of 35.62, this code ranks in the 96th percentile among Surgery codes — 4.5x the median (8.00). The highest wRVU in this category is 106.19.
Specialties
Frequently Asked Questions
What is CPT code 61598?
CPT 61598 (Transpetrosal approach/skull) is a Surgery code. Transpetrosal approach to skull base combining temporal bone drilling and lateral skull base exposure for brainstem lesion access.
What is the wRVU value for CPT 61598?
The work RVU for CPT 61598 is 35.62. This code is primarily used by Neurosurgery, Otologic Surgery. It has a 90-day global period.
When is CPT 61598 used?
Provides combined access to cerebellopontine angle and lateral brainstem. Used for large tumors or vascular lesions requiring extensive exposure.
Track This Code in RVU Edge
Log procedures, calculate wRVUs, and benchmark against MGMA data — all in one app.
CPT® is a registered trademark of the American Medical Association. Data sourced from CMS Physician Fee Schedule RVU26A. Descriptions, synonyms, and clinical context are original content by RVU Edge.