CPT Code Overview

CPT 01150 describes anesthesia for radical procedures for tumor of the pelvis, except hindquarter amputation. The code is used for comprehensive anesthetic management during major pelvic oncologic surgeries. The service type is Anesthesiology. The typical site of service is Hospital Inpatient (likely POS 21).

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Clinical Context

A patient with a pelvic malignancy is admitted to the hospital for a radical pelvic tumor resection (excluding hindquarter amputation). The typical workflow begins with preoperative assessment by anesthesia, including review of medical history, airway evaluation, and comorbidity optimization. On the day of surgery the patient is brought to the operating room (hospital inpatient, likely POS 21). Anesthesia induction and maintenance are provided by an anesthesiologist, often with a certified registered nurse anesthetist or anesthesiology assistant assisting. Intraoperative monitoring, hemodynamic management, fluid balance, and perioperative analgesia are documented. Postoperative handoff to the post-anesthesia care unit and inpatient surgical team completes the immediate episode of anesthesia care for the radical pelvic procedure.

Coding Specifications

• Modifiers:

• QS - Monitored anesthesia care service. Use when anesthesia services are billed as monitored anesthesia care rather than general or regional anesthesia for the listed procedure.

• QX - CRNA service with medical direction by a physician. Use when a Certified Registered Nurse Anesthetist provides care under the medical direction of a physician and documentation supports the physician-directed elements required for billing.

• Provider Taxonomies:

Related Diagnoses

• M23.50 — Chronic instability of knee, unspecified knee

  Clinical relevance: Represents knee joint instability that may coexist in the medical record; not directly the primary indication for pelvic tumor anesthesia but may be present as a comorbidity affecting perioperative mobility and risk assessment.

• M17.11 — Unilateral primary osteoarthritis, right knee

  Clinical relevance: Degenerative joint disease of the right knee; relevant as a comorbid condition influencing perioperative baseline function and analgesic planning.

• M17.12 — Unilateral primary osteoarthritis, left knee

  Clinical relevance: Degenerative joint disease of the left knee; relevant as a comorbid condition influencing perioperative baseline function and analgesic planning.

• S83.241A — Other tear of lateral meniscus, current injury, right knee, initial encounter

  Clinical relevance: Acute meniscal injury of the right knee; may be documented as a concurrent musculoskeletal injury affecting perioperative mobility and pain management.

• S83.242A — Other tear of lateral meniscus, current injury, left knee, initial encounter

  Clinical relevance: Acute meniscal injury of the left knee; may be documented as a concurrent musculoskeletal injury affecting perioperative mobility and pain management.

Related CPT Codes

01212 is related as an anesthesia code for major lower extremity/hip procedures and is clinically adjacent in scope to 01150 for radical pelvic tumor operations. In clinical workflow, 01212 may be used for alternative or separate procedures involving the hip joint or hip disarticulation, while 01150 is used specifically for radical pelvic tumor resections. These codes are alternatives based on the anatomic site and nature of the surgical procedure; they are not typically reported together for the same surgical field but may appear on the same anesthesia record if separate qualifying procedures occur.

National mean commercial rates are notably higher than Medicare’s benchmark when comparing BUCA (average commercial) to Medicare. BUCA’s mean allowed rate is $215.72 while Medicare is not provided in the input for a direct mean comparison; the commercial pool (represented by BUCA and other national payers) generally reports higher average allowed rates than Medicare typically would.

Rate dispersion varies substantially by payer. Cigna and BCBS show the widest spreads between the 75th and 25th percentiles (Cigna: $777.00 range; BCBS: $213.50 range), indicating greater variability in allowed amounts. UnitedHealth Group and Aetna show much tighter distributions (UHC: $25.42 range; Aetna: $537.00 range — note Aetna’s median and lower quartile are low relative to its 75th percentile, producing a large upper tail). The table and chart below present the full percentile and mean breakdown for national payers.