Summary & Overview
CPT 20827: Thumb Reattachment (Replantation)
CPT code 20827 denotes reattachment (replantation) of a completely amputated thumb — a complex microsurgical procedure with significant functional and rehabilitative implications. Nationally, this code represents high-acuity surgical care that often involves multidisciplinary teams, extended operative time, and intensive post-operative follow-up. It is clinically significant because successful thumb replantation can restore key hand function and reduce long-term disability and societal costs.
Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a national perspective on coverage and billing considerations for this major reconstructive procedure, plus clinical context regarding the nature of thumb replantation. The publication provides benchmarks for service-setting expectations, common coding considerations, and summaries of relevant policy themes affecting authorization, facility billing, and post-operative care coverage.
The report is intended for revenue cycle leaders, surgical departments, and policy analysts seeking a concise reference to CPT code 20827, its clinical role, and payer-related factors that influence billing and access to care. Data not available in the input are noted where applicable.
Billing Code Overview
CPT code 20827 describes the surgical reattachment (replantation) of a completely amputated thumb. The procedure is a major open invasive operation performed to restore form and function after traumatic thumb amputation.
Service type: Major reconstructive/reattachment surgery
Typical site of service: Hospital operating room or specialized surgical center
Clinical & Coding Specifications
Clinical Context
A 34-year-old male presents to the emergency department after a workplace crush injury in which his right thumb was completely amputated at the level of the proximal phalanx. The amputated digit was retrieved, wrapped in saline-soaked gauze, placed on ice, and transported with the patient. After triage and stabilization, the hand surgery team evaluates vascular status of the amputated thumb and the residual thumb stump, reviews tetanus status and antibiotic prophylaxis, and obtains informed consent for urgent replantation.
In the operating room under general anesthesia, the surgical team performs meticulous debridement of devitalized tissue, skeletal fixation with K-wire or small plates, repair of tendons, arterial and venous microvascular anastomoses, and nerve repair as indicated. The procedure is coded as 20827 (reattachment or replantation of thumb, complete amputation). Postoperative workflow includes monitoring in a microsurgery-capable recovery unit, anticoagulation/antiplatelet management as indicated, wound checks, and planned rehabilitation with hand therapy for range of motion and functional recovery. Typical payors involved include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, BUCA, and Medicare.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
22 | Increased procedural services | Use when the work, time, and effort substantially exceed the typical service for (e.g., prolonged operative time, unusual complexity). |