Summary & Overview
CPT 24931: Upper Arm Amputation with Implantation
CPT code 24931 represents surgical amputation of the upper arm (humerus) with insertion of an implant to maintain limb length or enable future prosthetic fitting. This major surgical procedure is clinically significant due to its impact on function, rehabilitation needs, and prosthetic planning. Nationally, accurate coding for this service affects coverage determinations, bundled payment considerations, and post-amputation care pathways.
Key payers discussed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of the clinical intent of the code, typical sites of service, and which payers commonly adjudicate claims for such procedures. The publication addresses common billing and documentation elements, applicable modifiers when present in input, and the broader implications for perioperative care, prosthetic planning, and rehabilitation coordination.
This executive summary prepares clinicians, coders, and administrators to understand the clinical scope of CPT code 24931, the payer landscape covered in this review, and the types of benchmarks and policy considerations that influence reimbursement and care pathways. Data not available in the input will be noted in the detailed sections.
Billing Code Overview
CPT code 24931 describes a surgical amputation of the upper arm (humerus) in which the provider performs a complete transection of the humerus and inserts an implant to preserve limb length or to facilitate future prosthetic fitting. This procedure is a form of major limb amputation and is categorized as a surgical service involving bone transection and implantation.
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Service type: Surgical amputation with implantation
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Typical site of service: Operating room or ambulatory surgical center, inpatient surgical unit when medically indicated
Clinical & Coding Specifications
Clinical Context
A 45-year-old male presents to the emergency department after a high-energy motor vehicle collision with a mangled right upper extremity that is not reconstructable. After multidisciplinary evaluation, the orthopaedic trauma and vascular teams determine that a transhumeral (above-elbow) formal amputation with insertion of a humeral end-bearing implant (osseointegrated or temporary spacer) is indicated to preserve limb length and facilitate future prosthetic fitting. The patient is taken to the operating room for a single-stage definitive amputation under general anesthesia with regional block for postoperative pain control. Intraoperative steps include sterile prep, circumferential soft-tissue dissection to the humerus, complete transection of the humerus at the planned level, hemostasis, shaping of the residual limb, insertion and fixation of the implant or spacer to maintain length, soft-tissue coverage, and layered closure. Postoperative workflow includes immediate recovery unit monitoring, pain management, wound checks, instruction on limb care, referral to physical medicine and rehabilitation and prosthetics/orthotics, and scheduled outpatient follow-up for wound healing and prosthetic planning.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
22 | Increased procedural services | Use when substantially greater work than typical for the procedure is documented (e.g., complex debridement, extensive reconstructive soft-tissue work in addition to amputation). |