Adult Congenital Heart Disease (ACHD) & Fontan Scrubber
Adult congenital heart disease surgeries involve intricate hemodynamics, multiple prior sternotomies, and complex arrhythmia management. Yet commercial payers aggressively downcode Fontan conversion (33737) to simple revisions, reject redo sternotomy add-ons (+33530), and bundle cryoablation Maze procedures. Audit your operative cases with automated clinical coding intelligence.
Adult Congenital Heart Disease (ACHD) & Fontan Conversion Scrubber
Scrub complex Fontan conversion (33737), defend redo sternotomy adhesiolysis add-ons (+33530), safeguard concomitant arrhythmia cryoablation Maze (+33257/+33258), and audit pulmonary valve replacements.
1. Primary ACHD Surgical Reconstruction
2. Redo Sternotomy Adhesiolysis (+33530)
3. Intraoperative Cryoablation Maze for Atrial Tachycardia
4. Concomitant Pulmonary Valve Replacement (33475)
5. Fontan Fenestration Management & Interventions
6. Post-Cardiotomy Mechanical Circulatory Support (ECMO 33946)
Clinical Audit Findings3 Rules Fired
Commercial payers frequently downcode 33737 to isolated revision 33735. Documentation confirms takedown of dilated right atrium, IVC-to-PA extracardiac conduit, and hemodynamic reconstruction.
CMS NCCI allows add-on +33530 with major congenital heart procedures when the reoperation occurs >30 days from initial surgery and extensive mediastinal adhesiolysis is documented.
Extensive operative tissue ablation (+33258) is reportable during open Fontan conversion when multi-lesion sets are applied for complex refractory atrial flutter.
Scrubbed Service Lines
Total cavopulmonary connection (TCPC) with extracardiac conduit (Fontan conversion)
Primary complex ACHD reconstruction. Total cavopulmonary anastomosis with PTFE/Dacron tube graft and atrial remodeling.
Reoperation, open cardiac procedure, more than 30 days following previous surgery
Clean redo add-on: Prolonged dissection of dense substernal/mediastinal adhesions off aorta, conduit, and right ventricle before cannulation.
Operative tissue ablation and reconstruction of atria, extensive (e.g., full maze procedure), with cardiopulmonary bypass
Clean extensive maze add-on: Bi-atrial or extensive right atrial lesion sets with pulmonary venous isolation or IVC/SVC line connections.
Replacement, pulmonary valve, open, with cardiopulmonary bypass (concomitant to Fontan conversion)
Secondary major cardiac reconstruction: Bioprosthetic pulmonary valve implantation during Fontan conversion with Modifier -51 applied.
Percutaneous transcatheter closure of congenital interatrial communication (Fontan fenestration closure)
Clean device deployment: Fluoroscopic and intracardiac echo-guided Amplatzer/Gore device closure of failing Fontan fenestration.
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