Summary & Overview
CPT 20805: Replantation of Forearm After Complete Amputation
CPT code 20805 denotes the replantation of a forearm after complete amputation, a complex, major surgical procedure involving reattachment of an amputated forearm. This code represents a high-acuity, resource-intensive intervention with significant implications for surgical staffing, operative time, and post-operative rehabilitation. Nationally, replantation procedures are clinically significant due to their impact on functional recovery, long-term disability, and health system costs.
Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna, UnitedHealthcare, and Medicare. Readers will find a concise presentation of what the code covers clinically, typical sites of service, and the types of services captured by this code. The publication provides benchmarks and payer coverage context where available, highlights common billing modifiers and administrative considerations, and summarizes relevant policy and coding guidance that affect claims submission and reimbursement processes.
The content is intended for clinicians, billing professionals, and policy analysts seeking a national overview of CPT code 20805, including clinical context, coding scope, and the administrative factors that commonly affect payment and utilization reporting. Data not available in the input is identified explicitly in the appropriate sections.
Billing Code Overview
CPT code 20805 describes the replantation of a forearm after complete amputation. This is a major, open, invasive surgical procedure to reattach an amputated forearm at the appropriate anatomical level.
Service Type: Major reconstructive/replantation surgery
Typical Site of Service: Inpatient or operating room setting at a hospital or specialized surgical center, where microsurgical and multidisciplinary operative support is available.
Clinical & Coding Specifications
Clinical Context
A 34-year-old male presents to the emergency department after an industrial accident with a complete amputation of the dominant forearm at the mid-forearm level. The amputated limb segment was wrapped in a sterile moist dressing, placed in a sealed bag, and cooled on ice. Trauma triage activates the hand/microsurgery team. Initial evaluation includes vascular status of the proximal limb, tetanus status, imaging (plain radiographs of the forearm and wrist), and basic labs. After rapid resuscitation and notification of the on-call reconstructive microsurgeon and anesthesiology, the patient is taken emergently to the operating room for attempted replantation.
The surgical workflow typically includes:
-
Preoperative consent and marking, antibiotic administration, and regional or general anesthesia.
-
Debridement and irrigation of proximal and distal stumps, temporary skeletal fixation (if indicated), microsurgical repair of arterial inflow and venous outflow, repair of tendons and nerves, and layered soft tissue closure. Intraoperative decision-making may include necessity for vein grafts, external fixation, or staged procedures.
-
Postoperative monitoring in an intensive care or specialized hand-service unit with vascular checks, anticoagulation as indicated, and serial neurovascular assessments. Rehabilitation with occupational therapy and later reconstructive revisions are frequently required.
Typical site of service: Operating room in an acute care hospital (inpatient stay postoperatively).
Service type: Major reconstructive microsurgical procedure (replantation of forearm after complete amputation).
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
62 | Two surgeons | Use when two surgeons from different specialties perform distinct portions of the replantation concurrently (for example, orthopedic and microvascular surgeons). |
66 | Surgical team | Use when a surgical team approach is documented for a complex replantation requiring multiple qualified surgeons functioning as a team. |
78 | Return to OR for related procedure during global period | Use if the patient requires an immediate postoperative return to the operating room for a complication or revision related to the initial replantation. |
79 | Unrelated procedure or service by the same physician during the postoperative period | Use when an unrelated procedure is performed during the global period (note: 79 is not in the provided list; do not use). |
54 | Surgical care only | Use when the billing physician performed only the surgical portion and another physician provided pre/postoperative care. |
55 | Postoperative management only | Use when the billing physician provided only postoperative care following replantation performed by another surgeon. |
22 | Increased procedural services | Use when documented work and complexity for the replantation significantly exceed usual services. |
23 | Unusual anesthesia | Use when general anesthesia is not appropriate and documentation supports unusual circumstances impacting anesthesia choice. |
80 | Assistant surgeon | Use when a qualified assistant surgeon performs a portion of the procedure and documentation supports assistant billing. |
62 | Co-surgeons (duplicate entry avoided) | Duplicate omitted; 62 already listed above. |
73 | Discontinued outpatient procedure prior to anesthesia | Use if a planned outpatient attempt at replantation is stopped before anesthesia induction. |
52 | Reduced services | Use when the documented procedure is partially reduced or not completed as originally planned. |
53 | Discontinued procedure | Use when the procedure is started but terminated due to extenuating circumstances documented in the record. |
26 | Professional component | Rarely applicable; use if billing only for the professional component of a service that has a split technical/professional component. |
| Taxonomy Code | Specialty | Notes |
|---|---|---|
2080S0002X | Orthopedic Surgery | Orthopedic surgeons often perform skeletal stabilization and participate in limb replantation. |
207X00000X | Plastic Surgery | Reconstructive/plastic surgeons commonly perform microsurgical revascularization and soft tissue reconstruction. |
332B00000X | General Surgery (Trauma/Acute Care) | Trauma surgeons coordinate initial resuscitation and may participate in debridement and stabilization. |
363LP0800X | Hand Surgery (subset of Plastic/Ortho) | Hand surgeons with microsurgery expertise lead replantation operations and postoperative care. |
207L00000X | Reconstructive Microsurgery | Microsurgeons who focus on complex limb reattachment and free tissue transfer. |
Related Diagnoses
| ICD-10 Code | Description | Clinical Relevance |
|---|---|---|
S58.031A | Amputation of right forearm, initial encounter | Represents a complete traumatic amputation of the right forearm requiring replantation attempts. |
S58.032A | Amputation of left forearm, initial encounter | Represents a complete traumatic amputation of the left forearm requiring replantation attempts. |
S58.031D | Amputation of right forearm, subsequent encounter | Used for later encounters in the course of treatment and follow-up after initial replantation. |
S58.032D | Amputation of left forearm, subsequent encounter | Used for later encounters in the course of treatment and follow-up after initial replantation. |
T79.A11A | Traumatic amputation of right upper limb, initial encounter | Alternative code set describing traumatic amputation with associated complications relevant to replantation. |
T79.A12A | Traumatic amputation of left upper limb, initial encounter | Alternative code set describing traumatic amputation with associated complications relevant to replantation. |
Z48.02 | Encounter for removal of surgical wound dressing | May be used in the postoperative management and follow-up of the replantation patient. |
Related CPT Codes
| CPT Code | Description | Relationship to This Procedure |
|---|---|---|
20690 | Application of external fixation device, uniplane; humerus, radius and ulna | May be performed for temporary skeletal stabilization of the proximal or distal forearm fragments prior to or during replantation. |
24341 | Open treatment of distal humeral fracture, with or without internal fixation, with radial head excision or repair as indicated | May be necessary if associated elbow/ distal humerus injury requires concurrent fixation during replantation efforts. |
25260 | Closed treatment of distal radial fracture; without manipulation | May be relevant for concomitant wrist/forearm fractures treated nonoperatively in the peri-replantation period. |
69990 | Microsurgical techniques, requiring use of operating microscope (listed separately in CPT) | Often reported when operative microscope is used for vascular and nerve repair during replantation. |
64718 | Neuroplasty and/or transposition; median nerve at the forearm and wrist level | May be performed during replantation for primary repair of severed peripheral nerves. |
26418 | Repair, tendon or muscle, flexor, forearm and wrist; primary, without free graft | Tendon repairs necessary to restore function after replantation are performed during the same operative session or staged procedures. |