Summary & Overview
CPT 27734: Distal Tibia and Fibula Growth Plate Fusion (Epiphysiodesis)
CPT code 27734 represents a pediatric orthopedic surgical procedure that fuses the distal growth plates of the tibia and fibula (epiphysiodesis) to halt further lengthening of the affected leg. Nationally, this code is important for management of limb-length discrepancies during skeletal growth and affects surgical scheduling, authorization workflows, and bundled payment considerations in pediatric orthopedics. Key payers in typical coverage and reimbursement discussions include Aetna, Blue Cross Blue Shield, Cigna, UnitedHealthcare, and Medicare. Readers will find a concise overview of clinical intent and service setting, payer coverage context, typical utilization drivers, and the kinds of benchmarks and policy updates relevant to this procedure. The publication outlines clinical context for use during growth, common settings where the procedure is delivered (hospital outpatient departments and ambulatory surgery centers), and operational implications such as preauthorization and coding accuracy. Where input data is unavailable, the publication notes that information is not provided. The goal is to inform billing, clinical, and policy stakeholders about the coding definition, national relevance, and the topics covered in more detailed sections of the full report.
Billing Code Overview
CPT code 27734 describes a surgical growth modulation procedure in which the provider fuses the distal (end) plates of the lower tibia and fibula to interrupt their growth. The procedure is performed to stop growth of the tibia and fibula on one side so that limb-length discrepancy is minimized as the patient continues to grow.
-
Service type: Surgical orthopedic growth modulation / epiphysiodesis of the distal tibia and fibula
-
Typical site of service: Hospital outpatient department or ambulatory surgery center, depending on clinical needs and patient status
Clinical & Coding Specifications
Clinical Context
A typical patient is a school-age child or adolescent with significant limb-length discrepancy identified during growth. The patient presents to pediatric orthopedic clinic with a 2–3 cm shorter left leg compared with the right, causing gait asymmetry and possible back pain. Growth prediction using standing long-leg radiographs and the Mosley–Paley or Green–Anderson methods estimates continued discrepancy as the child approaches skeletal maturity. The treating orthopedic surgeon recommends temporary distal tibial and distal fibular epiphysiodesis to arrest growth of the longer side and allow the shorter limb to catch up.
Perioperative workflow includes preoperative clinic evaluation, informed consent with discussion of risks and alternatives, preoperative imaging (standing AP and lateral long-leg), anesthesia evaluation, and scheduling for an ambulatory or short-stay surgical admission. In the operating room, under general anesthesia, the surgeon places percutaneous or open physeal arrests of the distal tibia and fibula (growth plate fusion) using screws, staples, or other devices. Postoperative care includes immediate radiographic verification, short-term immobilization or weight-bearing as tolerated per surgeon preference, activity restrictions, and interval follow-up with serial radiographs to confirm growth arrest and leg-length equalization. Typical sites of service are outpatient surgical centers or hospital outpatient departments; inpatient admission is uncommon unless comorbidities require observation.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
LT |