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CPT 29305: Hip Spica Body Cast for Trunk and One Leg Immobilization
CPT code 29305 covers application of a hip spica body cast encasing the trunk and one leg to the ankle or foot, used to immobilize the hip and thigh for fracture healing. This procedural code is significant in orthopaedic and trauma care pathways where nonoperative immobilization or temporary stabilization is required. Nationally, the code is relevant to inpatient and ambulatory surgical workflows and affects facility billing, device and supply use, and care coordination for lower-extremity fractures.
Key payers in the analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise clinical context for CPT code 29305, comparisons to related lower-leg and trunk immobilization codes, and explanations of typical sites of service. The publication outlines common clinical scenarios that prompt use of a hip spica cast and highlights associated procedure groupings used in fracture care.
The content provides benchmarks and policy-oriented guidance on billing context, payer coverage considerations, and code relationships within orthopaedic service lines. It is intended for revenue cycle professionals, orthopaedic clinicians, and policy analysts seeking a clear, actionable summary of CPT code 29305 and its role in national procedural coding and care delivery.
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Billing Code Overview
CPT code 29305 describes the application of a body cast encasing the trunk and one leg down to the ankle or foot (hip spica cast). The service is used to immobilize the hip and thigh to support healing of hip fractures and related lower-extremity injuries.
Service Type: Cast application / immobilization procedure
Typical Site of Service: Hospital operating room, ambulatory surgery center, or hospital inpatient setting, where procedural casting and fracture immobilization are performed.
National Reimbursement Benchmarks
Commercial averages sit above Medicare for CPT 29305: Blue Cross Blue Shield's mean ($487.10) and BUCA's mean ($398.90) are both higher than Medicare's mean ($294.20). UnitedHealth Group ($369.80) and Cigna ($337.40) also exceed Medicare, while Aetna's mean ($136.70) falls much lower. This positions Medicare nearer to the mid-to-lower end of national means, with BUCA representing a high-average commercial benchmark relative to Medicare.
Dispersion varies materially by payer. Blue Cross Blue Shield has the widest interquartile spread at $258.10 (P75 $597.60 minus P25 $381.50), followed by BUCA at $211.10 (P75 $499.20 minus P25 $288.10) and UnitedHealth Group at $233.90 (P75 $466.80 minus P25 $232.90). Aetna shows one of the tightest spreads at $174.00 (P75 $215.80 minus P25 $42.00), and Cigna's spread is $166.40 (P75 $421.90 minus P25 $215.50). Medicare's interquartile range is narrow at $32.00 (P75 $306 minus P25 $274), indicating the least variability among the listed payers.