CPT 93799 Reimbursement & Policy Benchmarks | OpenPayer

Summary & Overview

CPT 93799: Unlisted Cardiovascular Procedure

CPT code 93799 designates unlisted cardiovascular services or procedures used when a specific CPT code is not available. It captures new, unusual, or otherwise unclassified cardiovascular interventions and is an important billing mechanism for reporting novel techniques, device trials, or bespoke procedures. Nationally, 93799 matters because it supports coding flexibility for cardiovascular innovation while requiring clear documentation to justify medical necessity and the specifics of the service provided.

Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an overview of payer coverage patterns, documentation expectations, and common billing considerations related to unlisted cardiovascular procedures. The publication outlines benchmarks for utilization where available, summarizes policy considerations payers typically apply to unlisted cardiovascular codes, and places the code in clinical context for cardiovascular service lines.

This summary equips billing managers, coding professionals, and policy analysts with an understanding of when 93799 is used, the payers commonly involved, and the types of information payers and auditors expect to support claims for unlisted cardiovascular procedures. Data not available in the input is noted where detail is lacking.

AetnaBlue Cross Blue ShieldCigna HealthUnitedHealthcareMedicare93799CPTcardiovascularunlisted-procedurebillingcodinghospital-outpatientambulatory-surgery

Billing Code Overview

CPT code 93799 is an unlisted cardiovascular service or procedure code used to report new or unusual cardiovascular procedures that do not have an assigned CPT code. The code is intended for services that fall within the cardiovascular service category but are not described by existing, specific CPT codes.

Service type: Cardiovascular procedure — unlisted/new or unusual service

Typical site of service: Hospital outpatient department, ambulatory surgical center, office, or other facility where cardiovascular procedures are performed

Data not available in the input.

Clinical & Coding Specifications

Clinical Context

A 68-year-old male with ischemic cardiomyopathy and complex peripheral vascular anatomy is scheduled for an unconventional cardiovascular procedure developed at a tertiary care center: percutaneous transcatheter valve repair using a novel device under fluoroscopic and echocardiographic guidance. The patient has multiple prior sternotomies and a high surgical risk score, so the heart team elects a nonstandard transcatheter approach that is not yet assigned a specific CPT code. Pre-procedure evaluation includes history and physical, review of prior imaging, informed consent specific to an unlisted service, and coordination between cardiology, interventional cardiology, echocardiography, and anesthesiology.

On the day of service the patient receives monitored anesthesia care with intra-procedural transesophageal echocardiography. The interventional cardiology team performs device implantation, repeated hemodynamic measurements, and adjunctive angiography. The procedure requires additional time and technical effort because of anomalous vascular access and custom device deployment. Documentation includes detailed operative report describing indications, stepwise technique, intra-procedural findings, total time, devices used, and rationale for reporting an unlisted cardiovascular service using 93799. A complete billing submission includes a concise comparative report describing why existing CPT codes do not describe the service and supporting intraoperative images and time logs.

Coding Specifications

Modifier	Description	When to Use

CPT 93798: Supervised Exercise with Continuous ECG Monitoring and Diet Review

CPT-93797-SUPERVISED-CARDIAC-REHABILITATION-NO-ECG-MONITORING

CPT 93797: Supervised Cardiac Rehabilitation with Dietary Review

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Taxonomy Code	Specialty	Notes
`207RC0000X`	Interventional Cardiology	Interventional cardiologists most commonly perform novel percutaneous cardiovascular procedures.
`207RI0001X`	Cardiovascular Disease	General cardiologists involved in pre- and post-procedure management and echocardiographic interpretation.
`207L00000X`	Anesthesiology	Provides monitored anesthesia care or general anesthesia support for high-risk cardiovascular interventions.
`208600000X`	Cardiothoracic Surgery	May be involved in hybrid or rescue surgical components when a device or approach is novel.
`363A00000X`	Vascular Surgery	Participates when complex vascular access or hybrid endovascular techniques are required.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`93458`	Catheter placement in coronary or pulmonary artery for injection of contrast and for hemodynamic measurements (including left and right heart catheterization when performed)	Often performed before or during novel transcatheter procedures for baseline hemodynamics and angiography.
`93580`	Transcatheter therapy, mitral valve, percutaneous approach including imaging and implant when performed	Standard code for mitral transcatheter therapy; a novel device or technique that lacks an assigned code may be reported with `93799` instead.
`93312`	Transesophageal echocardiography, real-time with image documentation, including Doppler, intraoperative	Provides intra-procedural imaging guidance; billed separately when echocardiography is performed by another provider.
`99291`	Critical care, evaluation and management of the critically ill patient; first 30-74 minutes	May be reported when the patient requires continuous physician critical care management related to the complex procedure.
`94002`	Ventilation assist and management, initiation of pressure or volume preset ventilator for patients (not commonly primary)	May be used if mechanical ventilation is initiated intra-procedurally in hybrid OR settings.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`I25.10`	Atherosclerotic heart disease of native coronary artery without angina pectoris	Underlying coronary disease often coexists and complicates planning for novel cardiovascular interventions.
`I50.22`	Chronic systolic (congestive) heart failure	Common indication for advanced transcatheter valve or structural interventions in high-risk surgical patients.
`I34.0`	Nonrheumatic mitral (valve) insufficiency	Structural valve disease that may prompt unlisted valve repair approaches when standard codes do not apply.
`I35.0`	Nonrheumatic aortic (valve) stenosis	Severe valvular disease that can necessitate novel transcatheter repairs in patients unsuitable for standard valves.
`I80.2`	Phlebitis and thrombophlebitis of other deep vessels of lower extremities	Relevant when venous access issues or thrombosis complicate vascular access planning for procedures.

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