CPT 29035: Body Cast for Trunk and Spine Immobilization - OpenPayer

Summary & Overview

CPT 29035: Body Cast for Trunk and Spine Immobilization

CPT code 29035 reports application of a body cast from the shoulders to the hips to limit trunk and spinal motion after corrective surgery for congenital deformity or repair of traumatic spinal injury. This code captures a distinct postoperative immobilization service that supports spinal stability and healing and has implications for facility billing and surgical episode accounting. Nationally, accurate reporting of this code affects surgical line-item documentation, supply accounting, and post-surgical care attribution.

Key payers included in this analysis are Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise review of the clinical context for body cast application after spine surgery, commonly associated diagnosis types, and related supply codes used alongside the service. The publication summarizes typical sites of service and service type, lists frequently reported modifiers, and identifies related Level II supply codes that are commonly billed with cast application.

This piece provides practical reference material for coding and billing teams, revenue cycle managers, and clinicians responsible for documentation of postoperative immobilization. It highlights coding specifics for CPT code 29035, clarifies the expected clinical scenario for its use, and outlines what payers typically expect in claims supporting this procedure. Data not available in the input is noted where applicable.

AetnaBlue Cross Blue ShieldCigna HealthUnitedHealthcareMedicare29035CPTspinebody castpostoperative immobilizationorthopedicssurgical carecasting suppliesrevenue-cycle

Billing Code Overview

CPT code 29035 describes application of a body cast extending from the shoulders to the hips to limit motion of the trunk and spine following surgical correction of a congenital spinal deformity or repair of traumatic spinal injury. The procedure is a postoperative immobilization service intended to stabilize the thoracic and lumbar spine and support healing after spine surgery.

Service type: Postoperative spinal immobilization (body cast application)

Typical site of service: Hospital inpatient or outpatient surgical facility

Clinical & Coding Specifications

Clinical Context

A 14-year-old adolescent male is admitted following a motor vehicle collision with several upper thoracic and lumbar spine surgical repairs for traumatic fracture-dislocations. Postoperatively the orthopaedic trauma team applies a body cast extending from the shoulders to the hips to immobilize the trunk and spine after internal fixation of the spinal fractures. The cast is applied in the operating room immediately after the definitive spinal procedure while the patient is still under anesthesia. Postoperative nursing monitors skin integrity, neurovascular status of the extremities, respiratory effort, and pain control. Discharge planning includes outpatient follow-up with the orthopaedic surgeon for cast inspection, wound check, activity restrictions, and radiographic assessment of spinal alignment and hardware integrity. Routine supply codes for cast materials are submitted with the cast application claim.

Coding Specifications

Modifier	Description	When to Use
`26`	Professional component	When billing only the surgeon's professional services separate from facility billing if applicable.
`50`	Bilateral procedure	If a separately reportable bilateral body cast scenario existed (rarely applicable); included for completeness when bilateral notation is required.

HCPCS G0175: Scheduled Interdisciplinary Team Conference with Patient Present

29345

CPT 29345: Application of Long Leg Cast Including Knee, Leg, and Foot

29240

CPT 29240: Shoulder Strapping Application for Musculoskeletal Injuries

97550

CPT 97550: Caregiver Training for Functional Performance, Initial 30 Minutes

97810

CPT 97810: Acupuncture, Initial 15 Minutes Without Electrical Stimulation

cpt-97608-negative-pressure-wound-therapy-disposable-npwt-over-50cm2

CPT 97608: Negative Pressure Wound Therapy for Wounds >50 cm2

cpt-29105-upper-and-lower-arm-splint-application

CPT 29105: Upper and Lower Arm Splint Application

cpt-29010-risser-jacket-preoperative-scoliosis-localizer

CPT 29010: Risser Jacket Application for Preoperative Scoliosis Management

29130

CPT 29130: Application of Static Finger Splint

99309

CPT 99309: Subsequent Nursing Facility Care, Moderate Complexity

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Taxonomy Code	Specialty	Notes
`207X00000X`	Orthopaedic Surgery Physician	Primary specialty performing spinal stabilization and cast application.
`207XX0004X`	Orthopaedic Trauma Physician	Trainees or specialists who manage traumatic spinal and trunk stabilization and postoperative immobilization.
`207N00000X`	Orthopaedic Surgery of the Hand Physician	May be involved when concurrent upper extremity fractures are managed in conjunction with trunk/spine immobilization.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`S42.401A`	Unspecified fracture of shaft of humerus, right arm, initial encounter for closed fracture	Upper extremity fractures commonly occur with spine trauma; body cast may be applied concurrently when trunk immobilization is required after surgery.
`S52.501A`	Unspecified fracture of the lower end of right radius, initial encounter for closed fracture	Distal radius fractures may accompany high-energy trauma necessitating trunk/spine stabilization and postoperative immobilization.
`S52.301A`	Unspecified fracture of shaft of radius, right arm, initial encounter for closed fracture	Mid-shaft forearm fractures can coexist with spinal injuries; immobilization strategy may include trunk casting.
`S52.201A`	Unspecified fracture of shaft of ulna, right arm, initial encounter for closed fracture	Ulna shaft fractures occurring with spine trauma may be managed simultaneously; documentation should link fractures to the need for trunk immobilization.
`S42.202A`	Unspecified fracture of shaft of humerus, left arm, initial encounter for closed fracture	Contralateral humeral fractures may be present in polytrauma patients who require comprehensive immobilization including a body cast.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`Q4001`	Supply code for cast or splint supplies (Level II)	Reports additional cast materials and supplies used during body cast application; billed with the primary cast application.
`Q4002`	Supply code for cast or splint supplies (Level II)	Alternate supply-level code for cast or splint materials; used per payer guidance alongside the body cast application code.

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