Thoracic Surgery BillingComplete Coding & Revenue Guide (2026)Top CPT codes with current RVU data, denial patterns, modifier rules, bundling pitfalls, and revenue opportunities for thoracic surgery practices.
Top CPT Codes
The highest-value thoracic surgery CPT codes with current RVU data and Medicare payment from the CY 2026 Physician Fee Schedule. Click any code for the full payment, bundling, and modifier guide.
Most practices under-capture revenue on these codes through downcoding, missed modifier 25, stale fee schedules, or misapplied bundling. Our coders audit every line against the documentation before submission so the revenue earned actually gets billed.
Bundling Pitfalls
5 trapsThe code pairs that trigger NCCI edits and CO-97 denials in thoracic surgery. Know these before billing.
32505: 32507: Thoracoscopic wedge resection (32505 first lesion) + each additional (32507 add-on). Cannot bill 32505 twice for 2 lesions — use 32505 + 32507.
33533: 33521: CABG codes: 33533 (1 arterial graft) is base code. 33521 (1 venous graft) is add-on. For 2 arterial + 3 venous grafts: 33534 (2 arterial) + 33521 + 33522 + 33523.
33405: 33430: Aortic valve replacement (33405) bundles with CABG if performed through same incision. If combined AVR + CABG, bill both codes — they are NOT bundled. CMS explicitly allows combined billing.
32666: 32650: VATS lobectomy (32666) includes chest tube placement. Do NOT separately bill tube thoracostomy (32551) when done as part of the lobectomy.
99291: 33533: Critical care (99291) on day of cardiac surgery: separately billable ONLY if the critical care is for a separately identifiable problem (not routine post-op monitoring). Document the critical illness separately.
CO-97 bundling denials are recoverable with correct modifier documentation. Most billers write them off. We work each one against the clinical record and resubmit with the right modifier 25 or 59 path.
Modifier Guidance
When to apply each modifier in thoracic surgery claims. Wrong modifier application is the top single-line denial trigger and a leading audit target.
Increased complexity — use for redo sternotomy, porcelain aorta, complex adhesions from prior radiation, or emergency conversion from minimally invasive to open.
Bilateral — use for bilateral VATS procedures (e.g., bilateral wedge resections for metastatic disease).
Staged procedure — use for planned second-stage procedures (e.g., Stage 1 palliation → Stage 2 Glenn → Stage 3 Fontan in congenital cardiac surgery).
Co-surgeon — COMMON in cardiac surgery. Cardiac surgeon + cardiac surgeon for complex cases (aortic root replacement + CABG). Each bills 62 at 62.5%.
Surgical team — use for complex transplant or aortic surgery requiring a team approach. Rarely used outside transplant/complex aortic.
Return to OR for complication — mediastinal exploration for bleeding, sternal re-wiring, or pericardial window for post-op effusion.
Assistant surgeon — first assistant for CABG, valve, and thoracotomy. Check Medicare assistant surgery indicator — payable for most cardiothoracic procedures.
Revenue Opportunities
6 playsThe billing codes and services most thoracic surgery practices under-capture. Each one is a recurring revenue lift, not a one-time fix.
CABG + valve combined: Average 33533 + 33405 (CABG + AVR) generates $12,000-18,000 in professional fees. Combined cases pay more per-component than isolated procedures due to complexity adjustments.
TAVR program: 33361 pays $4,000-6,000 per case. TAVR volume is growing 15-20% annually as indications expand. Building a TAVR program requires heart team (CT surgeon + interventional cardiologist).
Robotic thoracic surgery: Same CPT codes but robotic approach attracts referrals for lung cancer, thymectomy, and esophageal surgery. Marketing advantage vs open thoracotomy.
ECMO management: 33946-33989 (ECMO initiation, management, decannulation) generates $800-2,000/day for ongoing management. Growing demand for COVID-related and cardiogenic shock ECMO.
Conduit harvest revenue: SVG harvest (33508) pays $300-500 and is separately billable from CABG. Endoscopic harvest (33508) commands the same code. Many billing departments miss this add-on.
Mechanical circulatory support: LVAD implant (33975/33976) generates $15,000-25,000 in professional fees. Bridge-to-transplant and destination therapy are expanding indications.
Documentation Checklist
What the chart must contain to support billing. Missing documentation means audit vulnerability.
- CABG (33533-33536 + 33517-33523): Document number and type of grafts (LIMA, RIMA, radial, SVG), target vessels (LAD, diag, OM, RCA, PDA), conduit harvest technique, cardiopulmonary bypass time, cross-clamp time, and off-pump vs on-pump technique.
- Valve surgery (33405-33468): Document valve pathology (stenosis, regurgitation, mixed), etiology (degenerative, rheumatic, bicuspid, endocarditis), pre-operative echo findings (gradient, valve area, EF), prosthesis type (mechanical vs bioprosthetic vs repair), size, and hemodynamic results.
- Lung resection (32440-32488): Document pathology (cancer staging — TNM, node stations sampled), approach (VATS vs thoracotomy vs robotic), extent of resection (wedge, segmentectomy, lobectomy, pneumonectomy), margin status, and lymph node harvest.
- VATS procedures (32601-32609): Document approach (single-port, multi-port), findings (pleural fluid, adhesions, masses, lymph nodes), procedures performed (biopsy, pleurodesis, decortication), and conversion to open if applicable.
- Transcatheter valve (33361-33369): Document access (transfemoral, transapical, transaortic), valve type and size, pre-deployment hemodynamics, deployment technique, and post-deployment assessment (aortogram, TEE).
Coding Workflow
Step by step approach for coding thoracic surgery encounters correctly.
1. Cardiac surgery: identify all components — valve (33405-33468), CABG (33533-33536 + 33517-33523), aortic (33860-33877), and congenital (33600+). Bill each component. 2. For CABG: count arterial grafts (33533 = 1, 33534 = 2, 33535 = 3, 33536 = 4+) and venous grafts (33517-33523 as add-ons). 3. For thoracic/lung: determine approach (VATS vs open) and extent (wedge vs lobectomy vs pneumonectomy). 4. For combined procedures: cardiac + thoracic on same day — bill each. 5. Harvest codes: SVG harvest (33508) is separately billable from CABG. LIMA harvest is included in arterial graft code.
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Everything about Thoracic Surgery billing
What CPT codes does Thoracic Surgery bill most often?
Top Thoracic Surgery codes include 99214 (Established patient office visit, moderate MDM or 30-39 minutes); 99215 (Established patient office visit, high MDM or 40-54 minutes); 99223 (1st hosp ip/obs high 75); 99232 (Sbsq hosp ip/obs moderate 35); 99233 (Sbsq hosp ip/obs high 50).
What are the most common denials in Thoracic Surgery billing?
Thoracic Surgery denials concentrate around medical necessity, bundling, prior authorization, and modifier errors.
Does Go Medical Billing handle Thoracic Surgery?
Yes. Go Medical Billing handles Thoracic Surgery billing with AAPC-certified coders, payer-specific scrub rules, and dedicated account management. Starting at 2.49 percent of collections with no setup fees.
Specialty content reviewed by AAPC-certified coders. CPT codes and descriptions are copyright of the AMA. Medicare payment varies by locality. Commercial rates vary by contract.
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We audit your last 90 days of thoracic surgery claims and surface revenue leakage in coding, modifier use, and bundling. AAPC-certified coders. 2.49 percent of collections. No setup fees.