ICD-10 Code I50.20 – Unspecified systolic (congestive) heart failure (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I50.20 – Unspecified systolic (congestive) heart failure
What it is
I50.20 identifies heart failure with systolic dysfunction when the type is documented as unspecified. You use it when the record confirms systolic congestive heart failure but does not specify acute, chronic, or combined features.
Clinical signs
Clinical features vary; refer to documentation. Typical findings in heart failure may include dyspnea, fatigue, edema, and signs of fluid overload, but the code itself depends on the provider’s documented diagnosis.
When to use this code
Use this code when the provider documents unspecified systolic heart failure, systolic congestive heart failure, or a similar statement without further detail. It is appropriate when the chart does not clarify acuity or whether the condition is acute, chronic, or acute on chronic.
Do not use for
Do not assign this code if the record specifies diastolic, combined, or left ventricular heart failure instead. If the documentation is unclear about systolic involvement, check documentation rather than assuming I50.20.
Coding tip
Query the provider when heart failure is documented without enough detail to confirm systolic type or acuity.