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CPT 00218: Anesthesia for Intracranial Procedure, Sitting Position
CPT code 00218 represents anesthesia services for intracranial surgical procedures performed with the patient in a sitting position. This code captures a high-complexity anesthetic environment associated with neurosurgical procedures where specialized positioning and physiologic management are required. Nationally, accurate reporting of this code matters for clinical documentation, hospital and anesthesia service billing, and resource allocation for complex neurosurgical cases. Key payers included in this analysis are Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will learn the clinical context of the code, typical sites of service, common companion diagnoses and related surgical procedures, and which payer groups commonly adjudicate claims for these services. The publication also outlines associated procedure pairings and common modifiers used in practice. This material is intended to provide a concise reference for coding accuracy, billing teams, and clinical coders engaged with anesthesia services for intracranial operations, emphasizing the code’s role in capturing elevated clinical risk and operative complexity.
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Billing Code Overview
CPT code 00218 describes anesthesia services provided for a patient undergoing an intracranial procedure performed in the sitting position. The service type is anesthesia for intracranial surgery in the sitting position, and the typical site of service is an operating room or surgical suite where neurosurgical intracranial procedures are performed.
National Reimbursement Benchmarks
National commercial rates for CPT 00218 cluster around BUCA’s average commercial benchmark of $69.20, with notable variation across named insurers. Blue Cross Blue Shield shows the largest spread between its 75th and 25th percentiles ($85.40 - $46.20 = $39.20), followed by Cigna ($119.90 - $67.80 = $52.10) and Aetna ($72.30 - $42.00 = $30.30). UnitedHealth Group has a relatively tighter interquartile range ($81.00 - $52.00 = $29.00), indicating less dispersion in mid-range commercial payments versus some peers.
In addition to dispersion, payers present different central tendencies: Cigna’s mean of $92.60 sits well above the BUCA average while Blue Cross Blue Shield and UnitedHealth Group means of $65.40 and $67.40, respectively, are near it. Aetna’s mean of $58.70 is lower than BUCA’s average. These contrasts highlight that commercial reimbursement for this code varies meaningfully by insurer, with Cigna and Blue Cross Blue Shield displaying the widest interquartile spreads and UnitedHealth Group and Aetna among the tighter ranges.