Summary & Overview
CPT 21740: Chest Wall Reconstruction for Pectus Deformity Repair
CPT code 21740 represents surgical reconstruction of the chest wall to repair congenital deformities such as pectus excavatum and pectus carinatum. This procedure is clinically significant because it can address functional impairments (respiratory and cardiac impact) and cosmetic concerns, and it is performed across pediatric and adult populations. Nationally, the code is relevant for payers managing coverage for corrective thoracic procedures and for facilities tracking surgical case mix and outcomes.
Key payers included in this analysis are Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will gain a concise clinical and billing profile of the procedure, including its service type and typical sites of service. The publication summarizes common billing modifiers associated with surgical services, highlights expected clinical contexts for use, and outlines what to expect in payer coverage discussions. It also provides benchmarking context and policy-oriented considerations applicable at the national level.
The piece is intended to help billing managers, surgeons, and policy analysts understand the code’s clinical scope, administrative considerations, and where to look for further payer-specific guidance. Data not available in the input are noted where applicable.
Billing Code Overview
CPT code 21740 describes surgical reconstruction of the chest wall to correct congenital deformities such as pectus excavatum (sunken chest) and pectus carinatum (protruding sternum). The procedure involves repair and reshaping of the sternum and adjacent chest wall structures to restore normal thoracic contour and function.
Service type: Surgical — chest wall reconstruction for congenital deformity
Typical site of service: Inpatient or outpatient hospital surgical setting depending on case complexity, patient age, and perioperative needs. Data not available in the input.
Clinical & Coding Specifications
Clinical Context
A 16-year-old male with symptomatic pectus excavatum presents to a thoracic surgery clinic for evaluation. He reports exertional dyspnea and decreased exercise tolerance; physical exam demonstrates a sunken anterior chest with sternal depression. Imaging includes chest radiograph and CT chest confirming significant sternal depression and cardiopulmonary compression. Pulmonary function testing shows a mild restrictive pattern. After preoperative evaluation and counseling, the patient is scheduled for surgical chest wall reconstruction to repair the congenital deformity.
The clinical workflow includes: preoperative assessment by the thoracic surgery team and anesthesia, imaging review, informed consent, operative planning (possible use of prosthetic bars or cartilage reshaping), the reconstructive procedure in the operating room with general anesthesia, intraoperative monitoring, postoperative chest radiograph, pain control, inpatient recovery with pulmonary toileting and physical therapy, and outpatient follow-up for wound check and functional assessment. Documentation includes indication, operative report with technique and materials, estimated blood loss, implants used, and follow-up plan for functional outcomes and potential hardware removal if applicable.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
22 | Increased procedural services | Use when work or time substantially exceeds typical for the procedure (document rationale). |