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CPT 61600: Extradural Neoplasm Removal, Anterior Cranial Fossa
CPT code 61600 denotes surgical resection of an extradural vascular or infectious neoplasm at the base of the anterior cranial fossa. This neurosurgical procedure addresses tumors external to the dura in the anterior cranial fossa and is relevant for tertiary neurosurgery centers and hospitals that manage complex cranial base pathology. It is a specialized operative code with clinical importance for cases involving mass effect, vascular lesions, or infectious processes localized to the extradural compartment.
Key payers examined include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. The publication provides a national perspective on billing and coverage considerations for CPT code 61600, highlighting common payer approaches, authorization and documentation expectations, and typical sites of service where the procedure is performed.
Readers will learn the clinical context and coding definition of CPT code 61600, how it relates to adjacent cranial base procedures, and what to expect from payer coverage frameworks. The report also summarizes typical coding companions and related procedure codes for anterior cranial fossa neoplasm management and identifies diagnostic scenarios commonly associated with this code. Data not available in the input is noted where applicable.
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Billing Code Overview
CPT code 61600 describes the surgical removal of a portion or all of an extradural vascular or infectious neoplasm located at the base of the anterior cranial fossa. The procedure involves excision of tumor tissue situated outside the dura mater in the anterior cranial fossa region.
Service type: Surgical resection of extradural cranial neoplasm
Typical site of service: Operating room in an acute care hospital or specialized surgical center (inpatient or outpatient depending on clinical indications and payer rules)
National Reimbursement Benchmarks
Nationally, Medicare’s mean rate of $1,944.80 sits well below BUCA’s average commercial mean of $2,587.40, indicating that commercial arrangements through BUCA reimburse materially higher on average than Medicare for CPT 61600. The gap of $642.60 between Medicare and BUCA highlights a meaningful difference in payment levels between a federal payer benchmark and a commercial group mean.
Dispersion measured by the interquartile range (P75 minus P25) varies notably across payers. Blue Cross Blue Shield shows a wide IQR of $1,471.80, and UnitedHealth Group’s IQR is $2,317.20, making UnitedHealth Group the most dispersed among those with full quartile data. Aetna has the tightest spread at $1,836.00? Wait — correct calculation: Aetna’s P75 ($2,133.30) minus P25 ($326.30) equals $1,807.00, while BUCA’s IQR is $1,826.40. Cigna’s IQR is $2,419.00. Medicare’s IQR is $150.00, the narrowest of all, reflecting consistent locality-based Medicare rates.