HCPCS Level II C9605: Percutaneous Revascularization of Bypass Graft, Additional Branch
HCPCS Level II code C9605 describes percutaneous transluminal revascularization performed of or through a coronary artery bypass graft (internal mammary, free arterial, or venous) that includes any combination of drug‑eluting intracoronary stent placement, atherectomy, and angioplasty, with distal protection when performed; this code is reported for each additional branch subtended by the bypass graft in addition to the primary procedure. Service type: percutaneous coronary revascularization; typical site of service: hospital catheterization laboratory or cardiac catheterization suite (inpatient or outpatient).
For related coverage guidance, see recent payer policy updates: Cardiac Computed Tomography (CCT)/Coronary Computed Tomographic Angiography (CCTA), Cardiovascular Disease Risk Assessment, Biomarkers for Myocardial Infarction and Chronic Heart Failure.
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National Reimbursement Benchmarks
Commercial national averages center around BUCA’s mean of $6,140.60, positioning it between lower-dispersion payers and high-variance plans. Blue Cross Blue Shield shows a very tight middle dispersion (P25 $4.00 to P75 $3,860.40) yielding a P75–P25 range of $3,856.40, while Cigna and Aetna display much wider spreads driven by high upper tails; Cigna’s P75–P25 range is $12,949.00 ($23,012.10 − $11,074.00) and Aetna’s is $5,569.00 ($6,896.60 − $1,327.00). UnitedHealth Group’s middle range is relatively narrow at $2,445.60 ($2,670.60 − $225.00), though its max suggests occasional far higher outliers.
Dispersion analysis highlights Cigna as the widest in the central interquartile range, indicating substantial variability around its median, while Blue Cross Blue Shield and UnitedHealth Group are among the tightest in IQR terms. BUCA’s mean provides a useful commercial benchmark at $6,140.60 but lacks min/max values; using the IQR comparisons above clarifies which payers concentrate around consistent middle rates and which exhibit broader variability.