Summary & Overview

CPT 92945: Percutaneous Coronary CTO Revascularization, Antegrade and Retrograde

CPT code 92945 captures percutaneous revascularization of a chronic total occlusion (CTO) in a single major coronary artery, branch, or bypass graft using both antegrade and retrograde crossing techniques. This technically complex interventional cardiology procedure is used to restore flow in completely occluded coronary vessels and may include angioplasty, stent placement, and atherectomy. Nationally, CTO procedures are important because they address a high-risk subset of coronary artery disease where symptoms, ischemia burden, and quality of life can be substantially impacted by successful revascularization.

Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. The publication provides a concise overview of clinical context, coding definitions, typical sites of service, and payer coverage considerations. Readers will find benchmarks and reimbursement context where available, summaries of relevant policy updates, and clinical considerations that explain when the service applies. The content is aimed at billing professionals, revenue cycle managers, and clinical leaders seeking clarity on how CPT code 92945 is defined, where it is typically performed, and which major payers are involved in coverage and payment for CTO percutaneous interventions.

Data not available in the input for specific modifiers, associated taxonomies, ICD-10 diagnoses, related codes, and detailed service-line mapping is noted and those fields are omitted from this summary.

AetnaBlue Cross Blue ShieldCigna HealthUnitedHealthcareMedicare92945CPTchronic total occlusionpercutaneous coronary interventionCTOinterventional cardiologyangioplastystentatherectomy

Billing Code Overview

CPT code 92945 describes percutaneous revascularization of a chronic total occlusion (CTO) of a single major coronary artery, branch, or coronary artery bypass graft using both antegrade and retrograde crossing techniques. The procedure involves insertion of a catheter through the skin (percutaneous approach), advancement of guidewires and devices across the occlusion in the forward (antegrade) direction and also by reverse (retrograde) passage through collateral vessels into the distal true lumen. Revascularization maneuvers may include angioplasty, stent placement, and/or atherectomy as required to restore blood flow in the completely occluded vessel.

Service type: Percutaneous coronary chronic total occlusion revascularization using dual (antegrade and retrograde) crossing techniques

Typical site of service: Hospital catheterization laboratory (inpatient or outpatient) or ambulatory surgical center with cardiac interventional capability

Clinical & Coding Specifications

Clinical Context

A 67-year-old male with a history of coronary artery disease, prior coronary artery bypass grafting (CABG), and chronic angina presents with worsening exertional chest pain and evidence of ischemia on stress testing. Coronary angiography demonstrates a chronic total occlusion (CTO) of the native right coronary artery with patent collateral channels and an ischemic territory. The interventional cardiology team schedules a percutaneous coronary intervention using both antegrade and retrograde techniques to re-establish flow through the CTO. Under conscious sedation or general anesthesia in a cardiac catheterization laboratory, vascular access (usually femoral or radial) is obtained, diagnostic angiography is performed to delineate the lesion and collateral channels, and specialized CTO guidewires and microcatheters are advanced. The operator attempts antegrade crossing; if unsuccessful or to improve success, retrograde crossing is performed by navigating a guidewire through collateral vessels into the distal true lumen and through the occlusion. Once a channel is established, balloon angioplasty, stent deployment, and/or atherectomy devices are used as indicated to restore and scaffold flow in the target major coronary artery or graft. Hemostasis is achieved at the access site and the patient is monitored in a recovery or coronary care setting for complications such as perforation, tamponade, or access-site bleeding. The procedure performed corresponds to 92945 for combined antegrade and retrograde percutaneous transluminal revascularization of a chronic total occlusion in a single major coronary artery, branch, or bypass graft and its subtended vessel(s).

Coding Specifications

Modifier	Description	When to Use

Taxonomy Code	Specialty	Notes
`207RC0000X`	Interventional Cardiology	Physicians specialized in percutaneous coronary interventions and CTO techniques.
`207RC0000X`	Cardiovascular Disease (Interventional subspecialty)	Interventional cardiologists typically perform `92945` in the cath lab setting.
`207RN0200X`	Cardiac Surgery	Cardiothoracic surgeons may be involved for surgical backup or if conversion to CABG is required.
`163WL0500X`	Vascular Surgery	May be involved when peripheral access complications or alternative access sites are managed.
`363LA2200X`	Cardiac Catheterization Technologist (support staff)	Allied health professionals who assist with device handling and imaging support.

ICD-10 Code	Description	Clinical Relevance
`I25.82`	Chronic total occlusion of coronary artery	Direct indication for CTO PCI using antegrade and retrograde techniques.
`I20.9`	Angina pectoris, unspecified	Symptom prompting diagnostic angiography and possible revascularization.
`I21.3`	ST elevation (STEMI) myocardial infarction of unspecified site	Acute coronary syndromes may require urgent intervention; CTO techniques are typically elective but knowledge of infarct-related artery is relevant.
`I25.10`	Atherosclerotic heart disease of native coronary artery without angina pectoris	Underlying atherosclerotic disease leading to CTO formation.
`Z95.1`	Presence of aortocoronary bypass graft	Relevant when targeting a bypass graft or using grafts as target or access during CTO procedures.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`93458`	Catheter placement in coronary artery, coronary angiography including intraprocedural imaging when performed, with left heart catheterization, coronary angiography, and possibly intervention	Often performed immediately before or in conjunction with CTO PCI for diagnostic angiography and guiding intervention.
`92928`	Percutaneous coronary intervention, with stent placement(s); single major coronary artery or branch	Used when stent placement is performed for non-CTO lesions or when a standard antegrade PCI with stent is done; `92945` is specific for combined antegrade/retrograde CTO techniques.
`92980`	Transcatheter intracoronary thrombolytic agent infusion, without angioplasty or stent	May be used in select cases for intracoronary thrombolysis, though uncommon in CTO PCI workflows.
`92924`	Percutaneous transluminal coronary thrombectomy, with or without intracoronary agent, including angioplasty when performed	Ancillary device code used when thrombectomy is required during intervention.
`92975`	Percutaneous transluminal coronary atherectomy, with or without balloon angioplasty	Reported when atherectomy devices are used during CTO crossing or lesion preparation prior to stenting.
`92944`	Percutaneous transluminal coronary revascularization of chronic total occlusion, antegrade or retrograde alone, single vessel	Related CTO code for single approach; use when only antegrade or only retrograde technique is performed rather than combined approaches.

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