Summary & Overview
HCPCS Q4002: Cast Supplies, Adult Body Cast, Fiberglass
HCPCS Level II code Q4002 designates adult full-body fiberglass cast supplies, with or without coverage of the head, used for comprehensive torso immobilization. Nationally, this code matters for billing and supply classification in settings that provide extensive immobilization—such as trauma centers, orthopedic clinics, and emergency departments—because proper coding affects claims processing, supply tracking, and clinical documentation.
The analysis covers major national payers: Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an overview of where Q4002 is applied clinically, typical sites of service, and the payer landscape relevant to coverage and claims adjudication. The publication outlines benchmarks for utilization and reimbursement patterns, highlights any recent policy or billing guidance impacting supply codes like Q4002, and provides clinical context to support accurate coding and documentation.
This summary is intended for national audiences including revenue cycle leaders, orthopedic providers, durable medical equipment managers, and coding professionals seeking concise guidance on the role and billing implications of HCPCS Level II code Q4002.
Billing Code Overview
HCPCS Level II code Q4002 describes cast supplies, body cast adult, with or without head, fiberglass. This code represents the supply of a full-body fiberglass cast for adult patients and is typically used when a circumferential immobilization is required for the torso and possibly the head.
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Service type: Durable medical supply for immobilization/orthopedic casting
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Typical site of service: Hospital inpatient or outpatient departments, orthopedic clinics, emergency departments, and specialized casting facilities
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Clinical & Coding Specifications
Clinical Context
An adult patient presents to an orthopedic clinic or hospital outpatient department after sustaining a mid-shaft femur fracture in a motor vehicle collision. The treating orthopedic surgeon determines that a full body cast (adult, fiberglass) is indicated for immobilization after reduction because the pattern of injury and patient comorbidities make nonoperative immobilization preferable to internal fixation. The clinical workflow includes assessment in clinic or emergency department, imaging confirmation with plain radiographs, closed reduction if indicated, selection and application of a Q4002 fiberglass body cast by qualified cast technicians or orthopedic providers, instruction on cast care and weight‑bearing status, and scheduled follow‑up visits for wound/skin checks and radiographic monitoring. Typical sites of service are hospital outpatient departments, ambulatory surgical centers when combined with other procedures, emergency departments for urgent application, and orthopedic clinics. The patient scenario may also include later cast removal or replacement for cast complications such as pressure sores, increased pain, or secondary displacement, with potential modifier use to indicate partial services, assistant involvement, or unexpected conditions during care.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
00 | No modifier / Standard service | Rarely appended; default when no other modifier applies |