Summary & Overview
CPT 3021F: Left Ventricular Ejection Fraction <40% or Moderate/Severe LVS Dysfunction
CPT code 3021F denotes a documented left ventricular ejection fraction (LVEF) below 40% or a left ventricular systolic function classified as moderately or severely depressed. This designation captures patients with clinically important systolic dysfunction who may require guideline-directed medical therapy, device evaluation, or higher-intensity management. Nationally, accurate use of this code supports quality measurement, care stratification, and risk adjustment for cardiovascular populations.
Key payers covered in this overview include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. The content outlines how the code is used in clinical documentation and billing and summarizes what readers can expect: definitions and clinical context for 3021F, typical sites where the service is documented, common applications in quality measurement, and notes on data availability. Benchmarks, payer policies, and specific reimbursement details are not included if not provided; readers will find an explanation of the code’s clinical meaning and the service settings where it is most commonly recorded.
Readers will gain a concise understanding of when 3021F applies, why it matters for population management and quality reporting, and which major payers are commonly involved when this clinical state is documented in records.
Billing Code Overview
CPT code 3021F is reported when a patient has a left ventricular ejection fraction (LVEF) less than 40 percent or when left ventricular systolic function (LVS function) is moderately or severely depressed. This code documents a clinically significant reduction in cardiac systolic function.
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Service type: Clinical assessment of cardiac systolic function, typically based on imaging or objective measurement of LVEF
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Typical site of service: Cardiology clinic, hospital inpatient setting, or outpatient imaging center where echocardiography or other LVEF assessment is performed
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Clinical & Coding Specifications
Clinical Context
A 68-year-old man with ischemic cardiomyopathy and progressive exertional dyspnea is evaluated in the outpatient cardiology clinic after hospitalization for acute decompensated heart failure. Transthoracic echocardiography documents a left ventricular ejection fraction of 32% with moderately to severely reduced left ventricular systolic function. The cardiologist documents heart failure with reduced ejection fraction (HFrEF) and records 3021F on the visit claim to indicate LVEF < 40% / moderate–severe LV systolic dysfunction. The clinical workflow includes: referral from primary care, review of prior imaging and status, focused history and medication reconciliation, ordering or repeating transthoracic echo if prior study is >3 months old, optimization of guideline-directed medical therapy, consideration of device therapy (ICD/CRT) referral, and scheduling follow-up to monitor response to therapy and LVEF recovery. Typical sites of service are outpatient cardiology clinic or hospital cardiology inpatient encounters where assessment of systolic function is performed and documented.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
25 | Significant, separately identifiable evaluation and management service by the same physician on the same day of the procedure | Use when an E/M visit is distinct from services related to an echo or procedure performed same day |