Summary & Overview

CPT 92943: Percutaneous Coronary CTO Recanalization, Antegrade

CPT code 92943 denotes a percutaneous coronary chronic total occlusion (CTO) intervention using an antegrade approach to restore blood flow in a completely occluded coronary artery or bypass graft. This technically complex, catheter-based procedure may include angioplasty, stent placement, and/or atherectomy and is billed for intervention on a single major coronary artery, branch, or bypass graft territory. Nationally, CTO interventions are clinically significant because they address symptomatic ischemia and can impact procedural volumes, resource use, and device utilization across cardiac catheterization programs.

Key payers included in this analysis are Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise review of the clinical scope of CPT code 92943, typical sites of service, common modifiers used with the service line, and the typical clinical context for billing. The publication summarizes benchmarking considerations and payer coverage themes, clarifies coding boundaries relative to related coronary interventions, and outlines policy or billing updates where available. Data not available in the input is noted explicitly when applicable.

AetnaBlue Cross Blue ShieldCigna HealthUnitedHealthcareMedicare92943CPTcoronary chronic total occlusionantegrade CTOpercutaneous coronary interventioninterventional cardiologyangioplastystent placementatherectomy

Billing Code Overview

CPT code 92943 describes a percutaneous procedure to reestablish blood flow in a completely occluded coronary vessel (chronic total occlusion) using an antegrade approach. The provider inserts a catheter through the skin and advances wires and devices forward through the blockage to restore patency. The procedure may include angioplasty, stent placement, and/or atherectomy and applies to a single major coronary artery, branch, or coronary artery bypass graft and the artery or branches the graft supplies.

Service type: Percutaneous coronary chronic total occlusion intervention (antegrade approach)

Typical site of service: Cardiac catheterization laboratory or interventional cardiology suite in an inpatient or outpatient hospital setting

Clinical & Coding Specifications

Clinical Context

A 68-year-old male with a history of hypertension, hyperlipidemia, and prior coronary artery bypass grafting presents with progressive exertional angina and positive noninvasive ischemia testing. Coronary angiography demonstrates a chronic total occlusion (CTO) of the native right coronary artery (RCA) with collateral flow and symptoms refractory to medical therapy. The interventional cardiology team schedules a percutaneous coronary intervention (PCI) using an antegrade approach to recanalize the CTO.

The patient is brought to the hospital cardiac catheterization laboratory. Pre-procedure evaluation includes review of medications (antiplatelet and anticoagulant management), informed consent, radial or femoral arterial access planning, and baseline labs including coagulation profile and renal function. Under sterile technique and fluoroscopic guidance, the operator advances specialized guidewires and CTO-specific microcatheters through the occlusion in the direction of normal antegrade blood flow. Adjunctive techniques may include balloon angioplasty, drug-eluting stent placement, and selective atherectomy if indicated. Hemostasis is achieved at the access site and the patient is observed in the recovery area with post-procedure monitoring for access complications, ischemia, arrhythmia, and contrast-induced nephropathy.

Typical site of service: hospital outpatient or inpatient cardiac catheterization laboratory (ambulatory surgery centers that perform high-complexity PCI less commonly).

Service type: percutaneous coronary intervention for chronic total occlusion of a single major coronary artery, antegrade approach, with possible angioplasty, stent placement, and/or atherectomy documented during the same encounter.

Coding Specifications

Modifier	Description	When to Use
`26`	Professional component	When billing the physician's interpretation/technical split applies (rare for PCI; typically used if facility bills technical and physician bills professional).
`51`	Multiple procedures	When additional unrelated procedures are performed during the same session and payer policy requires indicating multiple procedures.
`52`	Reduced services	When the procedure is partially reduced or not completed as planned due to clinical reasons.
`53`	Discontinued procedure	When the procedure is started but terminated prior to completion for patient-related reasons.
`59`	Distinct procedural service	To indicate a separate and distinct service from other procedures performed during the same session when documentation supports distinct sites or services.
`62`	Two surgeons	When two surgeons of different specialties perform distinct portions of the procedure concurrently (rare for PCI).
`66`	Surgical team	When a surgical team approach is used and payer requires team reporting.
`78`	Unplanned return to the operating/procedure room by same physician following initial procedure for a related procedure during the postoperative period	When patient requires an unplanned repeat coronary intervention in the same global period.
`79`	(Not in provided list)	Data not available in the input.
`73`	Discontinued outpatient hospital/ambulatory surgery	When outpatient surgery is discontinued prior to the intended procedure.
`74`	Discontinued inpatient procedure after anesthesia	When an inpatient procedure is terminated after induction of anesthesia.
`62`	Two surgeons	When two surgeons are required to perform separate, distinct parts of a complex case.
`59`	Distinct procedural service	Used to identify procedures not normally reported together but appropriate under the circumstances.

Taxonomy Code	Specialty	Notes
208D00000X	Cardiology	Interventional cardiologists perform complex PCI including CTO recanalization.
207RC0000X	Cardiothoracic Vascular Surgery	Surgeons may be involved for hybrid procedures or surgical backup.
207RE0101X	Vascular Surgery	Vascular surgeons may participate in access or complex endovascular cases.
363L00000X	Emergency Medicine	Emergency physicians may be involved for acute complications requiring urgent intervention.
207P00000X	Internal Medicine	Hospitalists or interventional cardiology consultative physicians involved in peri-procedural care.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`I25.82`	Chronic total occlusion of coronary artery	Primary diagnosis for which antegrade CTO PCI is indicated to restore perfusion.
`I20.9`	Angina pectoris, unspecified	Symptom prompting revascularization when due to myocardial ischemia from CTO.
`I21.3`	ST elevation (STEMI) myocardial infarction of unspecified site	Acute MI may coexist or complicate CTO interventions; relevant when PCI addresses infarct-related artery.
`I25.10`	Atherosclerotic heart disease of native coronary artery without angina pectoris	Underlying coronary artery disease that can include chronic occlusions requiring intervention.
`Z95.1`	Presence of aortocoronary bypass graft	Important when CTO involves a bypass graft or the graft supplies the subtended territory.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`92920`	Percutaneous transluminal coronary angioplasty; single major coronary artery or branch	Often performed during the same session for lesion preparation or as part of treating non-CTO lesions; may be billed separately if distinct and supported.
`92928`	Percutaneous transcatheter placement of intracoronary stent(s), with coronary angioplasty when performed; single major coronary artery or branch	Commonly performed after successful CTO recanalization to scaffold the vessel and maintain patency.
`92941`	Percutaneous transluminal coronary thrombectomy, including intracoronary thrombolytic agent(s), when performed; single vessel	May be used if there is thrombotic burden encountered during CTO intervention.
`92944`	Percutaneous transluminal revascularization of chronic total occlusion, retrograde approach	Alternative CTO technique; distinct from `92943` which is antegrade — selection depends on technical approach and guides coding.
`93571`	Right and left heart catheterization including intraprocedural injection(s) for coronary angiography and intraprocedural hemodynamics when performed; with percutaneous coronary intervention including intracoronary stent	May be reported for comprehensive reporting when hemodynamic assessment or combined diagnostic catheterization is documented.