93798

Physician services for outpatient cardiac rehabilitation; with continuous ECG monitoring (per session)

CPT code 93798 describes a comprehensive outpatient cardiac rehabilitation service that includes continuous electrocardiographic (ECG) monitoring during exercise. This procedure is designed for patients who have experienced significant cardiovascular events and require a supervised environment to improve their functional capacity safely. Unlike code 93797, which involves cardiac rehab without continuous telemetry, 93798 is utilized for patients deemed at higher risk for arrhythmias, ischemia, or hemodynamic instability during physical exertion. A typical session involves a multi-disciplinary team led by a physician or qualified health care professional (QHP) who provides oversight and immediate availability. The patient is connected to a telemetry system that transmits heart rhythm data in real-time to a central monitoring station. This allows staff to detect and respond to any abnormal rhythms or ST-segment changes immediately. The session typically lasts approximately 60 minutes and includes a structured warm-up, a period of aerobic exercise (such as treadmill walking, stationary cycling, or rowing), and a cool-down period. Throughout the session, clinical staff monitor blood pressure, heart rate, and the patient's subjective rating of perceived exertion (RPE). The goal of these services is to reduce the risk of future cardiac events, improve cardiovascular efficiency, manage symptoms, and enhance the overall quality of life through individualized exercise prescriptions and physiological monitoring.

Clinical Indications

  • Acute myocardial infarction within the preceding 12 months
  • Stable angina pectoris
  • Post-coronary artery bypass graft (CABG) surgery
  • Percutaneous transluminal coronary angioplasty (PTCA) or coronary stenting
  • Heart valve repair or replacement
  • Heart or heart-lung transplant
  • Chronic heart failure with left ventricular ejection fraction of 35% or less
  • Stable chronic heart failure patients who have not had a hospital stay or procedure in the last 6 weeks

Procedure Steps

  1. Verify medical necessity and physician order for cardiac rehabilitation with continuous ECG monitoring.
  2. Perform a pre-session assessment, including blood pressure, resting heart rate, current symptoms, and medication adherence.
  3. Prepare the patient's skin and attach ECG electrodes in the appropriate telemetry configuration.
  4. Initiate telemetry monitoring and confirm a clear signal at the central monitoring station.
  5. Conduct a supervised warm-up phase of low-intensity exercise for approximately 5 to 10 minutes.
  6. Engage the patient in the prescribed aerobic exercise phase while maintaining continuous ECG telemetry.
  7. Monitor heart rate and rhythm continuously, and record blood pressure and RPE at regular intervals (e.g., every 10-15 minutes).
  8. Adjust exercise intensity based on the patient's physiological response, heart rate targets, and symptoms.
  9. Perform a supervised cool-down phase for 5 to 10 minutes with continued ECG monitoring.
  10. Remove electrodes, conduct a post-session evaluation, and document the session's findings, including exercise duration, intensity, and any rhythm abnormalities noted.

Coding Guidelines

  • Report 93798 for each session of cardiac rehabilitation that includes continuous ECG monitoring.
  • Do not report 93798 in conjunction with 93797 (cardiac rehab without monitoring) for the same session.
  • A session is generally considered to be 60 minutes, but it is billed per session regardless of the exact duration, provided the components of the session are met.
  • Physician or QHP supervision is required, meaning the provider must be immediately available on the premises and reachable.
  • If a separate and significant E/M service is performed on the same day, it may be reported with modifier 25, though this is rare in routine cardiac rehab settings.
  • Medicare often limits the number of sessions to 36, though an additional 36 may be covered with documented medical necessity.
  • Continuous ECG monitoring must be medically necessary based on the patient's clinical risk profile.

Associated ICD-10 Codes