Summary & Overview
HCPCS G8923: Left Ventricular Ejection Fraction ≤ 40% or Depressed Systolic Function
HCPCS Level II code G8923 designates documentation that a patient has a current or prior left ventricular ejection fraction (LVEF) ≤ 40% or moderately to severely depressed left ventricular systolic function. This designation identifies patients with substantially reduced systolic function and is important for clinical stratification, quality measurement, and eligibility for certain care pathways and therapies at a national level.
Payers discussed in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise explanation of the code's clinical meaning, typical settings where it is recorded, and how it is used in administrative documentation. The publication also reviews benchmarking approaches, common billing modifiers, and the broader clinical context for heart failure and reduced ejection fraction — where available.
This summary provides a national perspective useful for coding professionals, revenue cycle staff, and clinical program managers seeking clarity on the code's purpose, common usage scenarios, and what elements of documentation support its assignment. Data not available in the input are noted where applicable throughout the full publication.
Billing Code Overview
HCPCS Level II code G8923 indicates documentation that a patient has a current or prior left ventricular ejection fraction (LVEF) ≤ 40% or explicit documentation of moderately or severely depressed left ventricular systolic function. This code is used to capture the clinical finding of significantly reduced systolic function.
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Service type: Clinical assessment/documentation of left ventricular systolic function, typically recorded as part of cardiac evaluation or chronic heart failure management
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Typical site of service: Inpatient and outpatient cardiology settings, including hospital wards, outpatient cardiology clinics, and specialty heart failure programs
Clinical & Coding Specifications
Clinical Context
A 68-year-old male with ischemic cardiomyopathy presents to the cardiology clinic for heart failure management. Prior hospitalization for acute decompensated heart failure included transthoracic echocardiography showing left ventricular ejection fraction (LVEF) of 35%. The clinic visit documents current LVEF ≤ 40% and moderately to severely reduced left ventricular systolic function. The workflow includes verification of prior imaging reports, review of current symptoms (dyspnea, orthopnea), medication reconciliation, optimization of guideline-directed medical therapy, and documentation of LVEF status in the problem list and visit note to support quality reporting and risk stratification.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
22 | Increased Procedural Services | Use when work required is substantially greater than typically required for the service due to complexity of evaluation or documentation related to low LVEF. |
23 | Unusual Anesthesia | Use if general anesthesia or unusual anesthesia circumstances are required for a procedure in a patient with severely reduced LVEF. |