CPT 21742: Minimally Invasive Chest Wall Reconstruction for Pectus Deformities
CPT code 21742 represents minimally invasive surgical reconstruction of the chest wall to correct congenital deformities such as pectus excavatum and pectus carinatum. This code captures procedures performed through small incisions to restore chest wall contour and function. Nationally, these procedures are clinically significant for pediatric and young adult populations with symptomatic or cosmetically concerning deformities and are part of broader reconstructive thoracic surgical services.
Key payers discussed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of clinical context, typical sites of service, and the service type associated with CPT code 21742. The publication provides benchmarks where available, notes on payer coverage patterns, and policy considerations that influence authorization and billing for chest wall reconstruction.
This summary helps clinicians, billing professionals, and policy analysts understand the code's clinical purpose, expected care settings, and payer landscape on a national level. Data not available in the input is explicitly noted where relevant.
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Billing Code Overview
CPT code 21742 describes minimally invasive reconstruction of the chest wall to repair congenital deformities such as pectus excavatum (sunken chest) or pectus carinatum (protruding sternum). The procedure is performed through small incisions and involves reconstructive techniques to correct chest wall contour and structural abnormalities.
Service Type: Surgical — Chest Wall Reconstruction (Minimally Invasive)
Typical Site of Service: Inpatient or outpatient surgical setting (operating room or ambulatory surgery center)
Data not available in the input.
Clinical & Coding Specifications
Clinical Context
A 16-year-old adolescent male presents with progressive pectus excavatum causing chest wall depression, cosmetic concern, and exertional dyspnea. After clinical evaluation and imaging (chest radiograph and CT or MRI to assess severity and cardiac compression), the surgical team elects minimally invasive repair of the chest wall. The procedure is performed in an operating room under general anesthesia with single-lumen or double-lumen endotracheal intubation as indicated. Small lateral thoracic incisions are made for placement of a substernal support bar (or equivalent implant) and guided visualization; the depressed sternum is elevated and stabilized to correct the deformity. Intraoperative monitoring includes cardiac and respiratory parameters; chest tubes may be placed if pleural entry occurs. The typical workflow includes preoperative assessment (anesthesia evaluation, informed consent), operative repair using small incisions with placement of corrective hardware, immediate postoperative recovery in the PACU, and admission to an inpatient or ambulatory surgical unit depending on patient status. Follow-up includes pain management, activity restrictions, wound checks, and outpatient removal of corrective hardware when indicated.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
22 | Increased procedural services | Use when the work, time, or intensity substantially exceeds the typical service for the procedure. |
23 | Unusual anesthesia | Use when general anesthesia is used for a procedure that normally does not require it or when anesthesia requirements are atypical. |
26 | Professional component | Use when reporting only the physician’s professional component separate from technical components (rare for operative codes). |
50 | Bilateral procedure | Use when the procedure is performed bilaterally and the code descriptor supports bilateral reporting. |
51 | Multiple procedures | Use when multiple distinct procedures are performed in the same operative session. |
52 | Reduced services | Use when the procedure is partially reduced or not completed as described. |
53 | Discontinued procedure | Use when the procedure is started but terminated due to extenuating circumstances. |
62 | Two surgeons | Use when two surgeons perform distinct portions of the procedure requiring separate surgical expertise. |
63 | Procedure performed on infants less than 4 kg | Use for qualifying neonatal weight exceptions if applicable. |
78 | Return to operating room for a related procedure during the postoperative period | Use when the patient requires a return to the OR for care related to the initial procedure. |
80 | Assistant surgeon | Use when a qualified assistant surgeon provides surgical assistance. |
81 | Minimum assistant surgeon | Use when a minimum assistant provides limited assistance. |
82 | Assistant surgeon (when qualified resident not available) | Use when an assistant is required and a qualified resident is not available. |
AS | Physician assistant, nurse practitioner, or clinical nurse specialist services for assistant at surgery | Use when an advanced practice clinician assists surgically and reporting rules allow. |
| Taxonomy Code | Specialty | Notes |
|---|---|---|
| 207P00000X | Thoracic Surgery | Primary specialty for chest wall deformity repair and complex mediastinal work. |
| 208U00000X | Pediatric Surgery | Treats congenital chest wall deformities in pediatric and adolescent patients. |
| 208000000X | General Surgery | Performs chest wall reconstruction in some centers, often for adolescent/adult patients. |
| 2084P0800X | Plastic Surgery | Involved for cosmetic chest wall reconstruction and contouring in select cases. |
Related Diagnoses
| ICD-10 Code | Description | Clinical Relevance |
|---|---|---|
Q67.6 | Pectus excavatum | Primary congenital indication for reconstructive repair to correct sternal depression and associated cardiopulmonary symptoms. |
Q67.7 | Pectus carinatum | Anterior chest wall protrusion that may be corrected surgically for functional or cosmetic reasons. |
R06.82 | Tachypnea, not elsewhere classified | Symptom that may be present in patients with severe chest wall deformity affecting respiration; relevant to preoperative assessment. |
R06.00 | Dyspnea, unspecified | Respiratory symptom prompting evaluation for chest wall repair when deformity contributes to exertional shortness of breath. |
M95.8 | Other acquired deformities of chest wall | Used when chest wall deformity is acquired or does not fit congenital categories and requires reconstruction. |
Related CPT Codes
| CPT Code | Description | Relationship to This Procedure |
|---|---|---|
19316 | Mastopexy, mastopexy augmentation, or breast procedures (reconstructive/reduction when performed for chest wall symmetry) | May be performed concurrently in female patients requiring chest wall contouring or symmetry restoration after pectus repair. |
21795 | Repair of chest wall defect, complex, requiring prosthetic material (eg, methylmethacrylate) | Alternative or adjunct procedure when reinforcement with prosthetic material is required for chest wall reconstruction. |
32552 | Thoracoscopy, surgical; with pleurodesis | May be performed if pleural intervention or adhesion management is required during chest wall repair. |
32820 | Thoracotomy, with intrathoracic procedures as indicated | Open thoracotomy approach when minimally invasive technique is not feasible; represents an alternative surgical approach. |
11042 | Debridement, subcutaneous tissue (used for wound complications) | May be performed postoperatively for wound dehiscence or infection management associated with chest wall procedures. |