Q4003 Shoulder Cast (HCPCS) Reimbursement | OpenPayer

Summary & Overview

HCPCS Level II Q4003: Adult Shoulder Plaster Cast Supplies

HCPCS Level II code Q4003 denotes plaster cast supplies for an adult shoulder cast (age 11+). This supply code identifies materials used to create or maintain shoulder immobilization and is relevant across outpatient and procedural settings where orthopedic casting is performed. Nationally, clear coding of supply items like Q4003 supports accurate billing, inventory management, and care coordination for musculoskeletal injuries requiring immobilization.

Key payers addressed in this overview include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find context on the clinical use of the code, common sites of service, and where this supply code fits in the billing line for orthopedic casting procedures. The publication outlines common modifiers associated with supply billing and notes areas where policy updates or payer coverage rules commonly affect reimbursement and documentation requirements.

This summary provides a concise reference for clinical managers, coding professionals, and revenue cycle staff seeking to understand the role of Q4003 in orthopedic supply billing, what to expect in terms of typical service settings, and the payers commonly involved in coverage decisions.

AetnaBlue Cross Blue ShieldCigna HealthUnitedHealthcareMedicareQ4003HCPCS Level IIshoulder castplaster castorthopedic suppliesoutpatient servicescasting materialsmedical billingsupply code

Billing Code Overview

HCPCS Level II code Q4003 describes cast supplies for a shoulder cast for adults (age 11 and older), made of plaster. The service involves provision of materials used to fabricate or maintain a shoulder immobilization cast.

Service type: Cast supply for orthopedic immobilization
Typical site of service: Hospital outpatient, ambulatory surgery center, urgent care clinic, or orthopedic clinic where cast application or replacement occurs.

Clinical & Coding Specifications

Clinical Context

An adult patient presents to an orthopedic clinic or urgent care with acute shoulder trauma after a fall from standing height, reporting pain, swelling, and limited shoulder motion. Initial evaluation includes history, focused shoulder and neurovascular exam, and plain radiographs (AP and scapular Y or axillary views) to assess for proximal humerus fracture, clavicle fracture extending to the shoulder girdle, or significant soft-tissue injury requiring immobilization. After imaging confirms a nondisplaced or minimally displaced proximal humerus fracture or a clavicular fracture requiring immobilization, a clinician (orthopedist, emergency medicine physician, or physician assistant under supervision) applies a shoulder plaster cast for immobilization.

The clinical workflow: initial triage and analgesia; imaging ordered and reviewed; informed consent and documentation of indications for casting; skin inspection and padding applied; Q4003 supplies (adult shoulder plaster cast materials) used during the procedure; cast applied and molded; neurovascular status and range-of-motion limitations documented; patient/caregiver instructed on cast care, signs of complications (increased pain, numbness, swelling) and follow-up arranged for orthopedic clinic or fracture clinic within 1–2 weeks for reassessment and possible cast change or removal. Typical sites of service include hospital emergency departments, outpatient orthopedic clinics, urgent care centers, and ambulatory surgery centers for cases requiring sedation or additional procedures.

Coding Specifications

Modifier	Description	When to Use

HCPCS Q5116: Trastuzumab-qyyp (Trazimera) Injection, 10 mg

HCPCS-Q4379-AMNIODEFEND-AMNIOTIC-MATRIX-SQ-CM

HCPCS Q4379: Amniodefend Amniotic Matrix, per sq cm

HCPCS-Q9954-ORAL-MRI-CONTRAST-AGENT-PER-100ML

HCPCS Q9954: Oral Magnetic Resonance Contrast Agent, per 100 ml

HCPCS-Q4178-FLOWERAMNIOPATCH-PER-SQ-CM-ADD-ON

HCPCS Level II Q4178: Floweramniopatch, Per Square Centimeter

HCPCS-Q4156-ADJUNCT-BIOLOGIC-NEOX-CLARIX-100-PER-CM2

HCPCS Q4156: Neox 100 or Clarix 100, per 100 cm²

HCPCS-Q4115-ALLOSKIN-PER-SQ-CM-ALLOGRAFT-SUPPLY

HCPCS Q4115: Alloskin, Biologic Allograft Skin per cm²

HCPCS-Q4017-LONG-ARM-PLASTER-SPLINT-ADULT

HCPCS Q4017: Long Arm Plaster Splint, Adult (11+)

HCPCS-Q4357-XWRAP-PLUS-PER-SQUARE-CENTIMETER

HCPCS Q4357: Xwrap plus, per square centimeter (add-on)

HCPCS-Q2009-FOSPHENYTOIN-50MG-PHENYTOIN-EQUIVALENT-INJECTION

HCPCS Q2009: Injection, Fosphenytoin 50 mg Phenytoin Equivalent

HCPCS-Q5135-TOCILIZUMAB-AAZG-BIOSIMILAR-INJECTION-1MG

HCPCS Level II Q5135: Tocilizumab-aazg (Tyyenne) injection, 1 mg

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Taxonomy Code	Specialty	Notes
207L00000X	Orthopedic Surgery	Primary specialty performing shoulder fracture management and casting.
208D00000X	Emergency Medicine	Frequently applies casts in ED for acute injuries.
364SP0800X	Physician Assistant	Performs casting under supervising physician in many settings.
363LP0200X	Anesthesiology Assistant	Involved when sedation or monitored anesthesia care is required for casting.
362A00000X	Nurse Practitioner	Provides casting and follow-up in outpatient and urgent care settings.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`S42.2XXA`	Fracture of the scapula, initial encounter	Scapular fractures involving the shoulder girdle may require immobilization with a shoulder cast or sling.
`S42.20XA`	Unspecified fracture of clavicle, initial encounter	Clavicle fractures commonly immobilized with a figure-of-eight or shoulder cast support depending on displacement.
`S42.21XA`	Fracture of lateral end of clavicle, initial encounter	Lateral clavicle fractures near the AC joint often need immobilization with shoulder casting materials.
`S42.22XA`	Fracture of shaft of clavicle, initial encounter	Midshaft clavicle fractures typically managed nonoperatively with immobilization such as a shoulder cast or sling.
`S42.201A`	Fracture of unspecified part of clavicle, initial encounter	General clavicle fracture code used when exact location unspecified; immobilization with a shoulder cast is a common treatment.
`S42.3XXA`	Fracture of the proximal humerus, initial encounter	Proximal humerus fractures frequently require shoulder immobilization with a plaster cast in selected nondisplaced or minimally displaced patterns.
`M75.1`	Rotator cuff tear or rupture, not specified as traumatic	Some acute rotator cuff injuries after trauma may be temporarily immobilized with a shoulder cast for pain control before definitive management.
`S43.0XXA`	Dislocation of shoulder, initial encounter	Acute shoulder dislocations may be reduced and then immobilized in a shoulder cast or sling to allow soft-tissue healing.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`23600`	Closed treatment of clavicular fracture; without manipulation	Often performed before or instead of shoulder casting for isolated clavicle fractures requiring immobilization rather than a circumferential shoulder cast.
`23605`	Closed treatment of clavicular fracture; with manipulation	Used when manipulation is required prior to immobilization and casting materials like `Q4003` are applied afterward.
`29700`	Application of long arm splint (shoulder to hand)	Alternate immobilization technique; may be used instead of a shoulder plaster cast depending on fracture pattern.
`29125`	Application of sling and swath	Common adjunct to shoulder casting for additional immobilization and patient comfort.
`20690`	Application of external fixation device	Used in more complex shoulder girdle injuries prior to definitive casting or immobilization when external fixation is required.
`99070`	Supplies and materials (except spectacles), non-covered items or services	Billed for additional non-covered casting supplies when payor rules permit; may be used in conjunction with `Q4003` per payer guidance.

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