Summary & Overview
CPT 27440: Tibial Reconstruction of the Knee Joint, Reconstructive Surgery
CPT code 27440 represents reconstructive surgery of the tibial portion of the knee joint performed to relieve pain and improve gait. Nationally, this code is significant because it captures complex orthopedic interventions aimed at restoring joint function and reducing disability among patients with degenerative or traumatic tibial joint conditions. Reconstructive knee procedures drive substantial surgical resource use, influence hospital and outpatient surgical volumes, and are a focus for clinical quality and utilization management.
Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an overview of coding context, common payor coverage considerations, and clinical context for the procedure. The publication presents benchmarks and utilization patterns where available, summarizes relevant policy updates affecting prior authorization and coverage, and provides clinical background to help coding, billing, and policy teams interpret use of CPT code 27440 in practice.
The content is intended for a national audience of clinicians, coding specialists, payer policy staff, and health policy analysts seeking concise guidance on the role of CPT code 27440 in surgical orthopedic care and payer interactions.
Billing Code Overview
CPT code 27440 describes a surgical procedure in which the provider reconstructs the diseased or damaged tibial portion of the knee joint to relieve pain and improve gait. This procedure focuses on restoring tibial joint surfaces and alignment within the knee.
-
Service type: Orthopedic reconstructive surgery of the tibial component of the knee joint
-
Typical site of service: Hospital inpatient or hospital outpatient surgical setting, including operating room environments for orthopedic procedures
Clinical & Coding Specifications
Clinical Context
A 68-year-old ambulatory patient with end-stage osteoarthritis of the knee presents with chronic medial tibial plateau pain, marked functional limitation, varus deformity, and failed conservative care (physical therapy, analgesics, intra-articular injections). After preoperative assessment and informed consent, the orthopedic surgeon schedules a tibial component reconstruction procedure to reconstruct the diseased or damaged tibial part of the knee joint to relieve pain and improve gait. The operative workflow includes preoperative templating and imaging review, intraoperative exposure of the knee via standard arthrotomy or minimally invasive approach, debridement of damaged tibial articular surface, preparation of the tibial plateau (reaming, contouring), placement of tibial augmentation or prosthetic components as indicated, intraoperative fluoroscopic confirmation, hemostasis, layered closure, and postoperative recovery with weight-bearing instructions and physical therapy planning. Typical perioperative services include anesthesia evaluation, surgical time, intraoperative imaging, implant handling, and postoperative hospital observation or discharge to home with outpatient therapy. Typical site of service is an inpatient or outpatient hospital surgical suite or ambulatory surgery center depending on patient status and institutional practice.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
59 | Data not available in the input. | Data not available in the input. |
| Modifier | Description | When to Use |
|---|---|---|
11 | Administrative or billing placeholder for the usual/standard service (reporting professional intent). | When the procedure was performed as the usual, standard service (often reported by default). |
22 | Increased procedural services. | When the work required to perform 27440 is substantially greater than typically required. |
52 | Reduced services. | When 27440 is partially reduced or not completed as described. |
53 | Discontinued procedure. | When the procedure was started but terminated due to extenuating circumstances or those that threaten the patient's well-being. |
62 | Two surgeons. | When two surgeons work together as primary surgeons performing distinct portions of 27440. |
66 | Surgical team. | When an organized surgical team performs 27440. |
80 | Assistant surgeon. | When an assistant surgeon provides surgical assistance during 27440. |
LT | Left side. | To identify the left knee as the operative site when billing 27440. |
RT | Right side. | To identify the right knee as the operative site when billing 27440. |
50 | Bilateral procedure. | When reconstruction of tibial components is performed bilaterally during the same operative session. |
26 | Professional component. | When billing a service that has a distinct professional component related to intraoperative interpretation or reporting. |
73 | Discontinued outpatient hospital/ambulatory surgery prior to anesthesia. | When 27440 was cancelled after the patient was prepared but before anesthesia in the outpatient setting. |
78 | Return to the operating room for a related procedure during the global period. | When a related unplanned return to OR for the same knee occurs during the global period following 27440. |
79 | Data not available in the input. | Data not available in the input. |
| Taxonomy Code | Specialty | Notes |
|---|---|---|
| 207X00000X | Orthopaedic Surgery | Primary specialty performing knee reconstruction and tibial component procedures. |
| 207L00000X | Sports Medicine (Orthopaedics) | Subspecialists performing knee reconstructions, particularly in active patients. |
| 208000000X | General Surgery | Occasionally involved in multidisciplinary or complex limb reconstruction cases. |
| 208600000X | Surgical Oncology | In cases where tibial reconstruction is performed for tumor-related bone loss. |
| 363LP0800X | Podiatric Surgery | Rarely involved for distal tibial or complex lower-extremity reconstructions. |
Related Diagnoses
| ICD-10 Code | Description | Clinical Relevance |
|---|---|---|
M17.11 | Unilateral primary osteoarthritis, right knee | Common indication for tibial component reconstruction to relieve pain and improve gait when tibial articular surface is diseased. |
M17.12 | Unilateral primary osteoarthritis, left knee | As above, affecting the left knee. |
M17.0 | Bilateral primary osteoarthritis of knee | When both knees are affected, bilateral reconstructions or staged procedures may be planned. |
M17.9 | Osteoarthritis of knee, unspecified | General diagnosis used when side or specific type is not otherwise specified during planning for tibial reconstruction. |
M23.2 | Derangement of meniscus due to old tear or injury | Chronic meniscal damage can contribute to tibial plateau degeneration prompting reconstruction. |
M89.9 | Disorder of bone, unspecified | Used for tibial bone defects or osteonecrosis requiring reconstruction when a more specific code is not appropriate. |
M84.46 | Pathologic fracture, tibia and fibula, other | Pathologic or insufficiency fractures of the tibial plateau that necessitate reconstructive procedures. |
C79.51 | Secondary malignant neoplasm of bone, knee region | Tumor-related tibial bone loss may require reconstruction as part of oncologic limb salvage. |
Related CPT Codes
| CPT Code | Description | Relationship to This Procedure |
|---|---|---|
27447 | Arthroplasty, knee, condyle and plateau; medial OR lateral compartment. | Alternative or adjunct when addressing compartmental tibial articular disease; may be used when tibial reconstruction includes replacement of tibial plateau. |
27446 | Arthroplasty, knee, condyle and plateau; medial AND lateral compartments with or without patella resurfacing (total knee arthroplasty). | Performed when disease involves the entire tibial plateau and femoral components, representing conversion from isolated tibial reconstruction to total knee arthroplasty. |
27438 | Removal of prosthesis, including total knee prosthesis, including allograft when performed. | Performed when prior tibial components or implants are removed before reconstruction. |
27418 | Osteotomy, proximal tibia; for angular deformity (e.g., high tibial osteotomy). | Can be performed before or in conjunction with tibial reconstruction to correct alignment and offload the reconstructed tibial surface. |
20670 | Arthrocentesis, aspiration and/or injection; large joint or bursa. | Preoperative or postoperative joint aspirations or injections for diagnostic or therapeutic purposes in the knee perioperative period. |
73610 | Radiologic examination, knee; 2 views. | Preoperative and postoperative radiographs used for planning and confirming tibial reconstruction and component positioning. |