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Cardiovascular surgery CPT code checks
Cardiovascular surgery CPT code review should verify the exact operative service, bypass graft count, valve or TAVR detail, thoracic vessel work, assistant surgeon support, global period logic, ICD-10 support, and NCCI edit risk before submission.
CMS PFS, NCCI, and ICD-10 resources support payment indicator, bundling, modifier, and diagnosis checks. Final descriptor validation should be completed in the current CPT code set.
- CABG, valve, and TAVR code family check
- Assistant surgeon and modifier review
- NCCI bundling and global period control
- ICD-10 support from the operative note
Official sources
Cardiovascular Surgery CPT Code Structure
Cardiovascular surgery billing involves some of the highest-value CPT codes in medicine, with individual procedure reimbursements ranging from $2,000 to $5,000 for the surgeon professional fee. The coding complexity arises from multi-component procedures (bypass grafts using multiple vessels), add-on codes for additional grafts, concurrent valve and bypass surgery, and the distinction between open and endovascular approaches. A single cardiac surgery case can generate 3 to 6 procedure codes on a single claim, and incorrect sequencing or missing add-on codes can reduce reimbursement by 30% to 50% on a high-value case.
Coronary Artery Bypass Graft Codes (33533-33536)
CABG coding depends on the type of conduit (arterial vs. venous) and the number of grafts. Arterial graft codes: 33533 (single arterial graft, approximately $2,800 Medicare physician fee), 33534 (two arterial grafts, approximately $3,200), 33535 (three arterial grafts, approximately $3,500), 33536 (four or more arterial grafts, approximately $3,800). Venous graft codes: 33510 (single vein graft, approximately $2,400), 33511 (two vein grafts, approximately $2,700), 33512 (three vein grafts, approximately $2,900), 33513 (four vein grafts, approximately $3,100), 33514 (five vein grafts, approximately $3,300).
When a case uses both arterial and venous conduits (the most common scenario), report the arterial graft code as the primary procedure and add the venous graft code with modifier 51. A typical triple bypass using the left internal mammary artery (LIMA) to the LAD plus two saphenous vein grafts bills as 33533 (one arterial graft) plus 33511 (two vein grafts, modifier 51). Combined reimbursement for this configuration is approximately $4,200 to $4,500 from Medicare.
Valve Replacement Codes (33405-33430)
Aortic valve replacement uses CPT 33405 (open aortic valve replacement with cardiopulmonary bypass, approximately $2,900 Medicare physician fee). Mitral valve replacement uses 33430 (approximately $3,100). Mitral valve repair (33425-33427) reimburses similarly to replacement. Transcatheter aortic valve replacement (TAVR) uses 33361-33366 depending on the approach (transfemoral 33361, approximately $2,600; transapical 33364, approximately $3,000). TAVR codes are increasingly common as the procedure expands to lower-risk patients.
When valve replacement is performed concurrently with CABG, both procedures are reported. The higher-valued procedure is listed first, and the secondary procedure carries modifier 51. A combined CABG with aortic valve replacement (33533 + 33405-51) generates total surgeon reimbursement of approximately $4,800 to $5,200 from Medicare. The operative report must clearly document both procedures as distinct surgical components with separate indications.
Thoracic Aortic Repair (33860-33877)
Ascending aortic repair uses CPT 33860 (ascending aorta graft with cardiopulmonary bypass, approximately $3,200). Aortic arch repair adds complexity: 33870 (transverse arch graft, approximately $3,500) covers arch replacement under deep hypothermic circulatory arrest. Descending thoracic aortic repair: 33875 (descending thoracic aorta graft without bypass, approximately $2,800) and 33877 (with bypass, approximately $3,400). These are among the highest-complexity cardiovascular procedures, and modifier 22 is frequently appropriate given the extended operative times and technical demands.
Global Surgical Periods
All major cardiovascular surgery codes carry a 90-day global surgical period. This includes the pre-operative visit on the day before or day of surgery, the intraoperative services, and all routine postoperative care for 90 days. Hospital rounds during the index admission, the discharge visit, and all office follow-ups within 90 days are included. However, ICU critical care services (99291-99292) on the day of surgery are separately billable because they are not considered routine postoperative care. Bill critical care with modifier 25 on the same day as the surgery.
Assistant Surgeon Billing
Cardiovascular surgery routinely requires an assistant surgeon. The assistant bills the same procedure codes with modifier 80 (assistant surgeon) or 82 (assistant surgeon when qualified resident not available). Medicare reimburses the assistant at 16% of the primary surgeon fee. For a CABG case reimbursing $3,200 to the primary surgeon, the assistant receives approximately $512. Commercial payers typically reimburse assistants at 20% to 25% of the primary surgeon rate. Ensure the assistant surgeon operative note documents their specific role and contribution to the procedure.