ICD-10 Code I50.32 – Chronic diastolic (congestive) heart failure (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I50.32 – Chronic diastolic (congestive) heart failure
What it is
I50.32 identifies chronic heart failure with preserved relaxation, where the left ventricle does not fill normally during diastole. Use this code when documentation states chronic diastolic or chronic congestive heart failure with a diastolic pattern.
Clinical signs
Common findings include exertional dyspnea, fatigue, orthopnea, edema, and other signs of fluid retention. Clinical features vary; refer to documentation and supporting studies when the chart describes chronic diastolic dysfunction or heart failure.
When to use this code
Use I50.32 when the provider documents chronic diastolic heart failure, chronic diastolic congestive heart failure, or equivalent wording. Code it when the condition is active and being monitored, evaluated, or treated during the encounter.
If the note only says heart failure without specifying diastolic type, check the record for clarification. You should not assume this code from symptoms alone.
Do not use for
Do not assign this code for acute heart failure, systolic heart failure, or combined systolic and diastolic failure. Check documentation if the provider uses nonspecific heart failure terminology.
Coding tip
Match the code to the exact heart failure type documented; if chronicity or diastolic nature is unclear, query the provider.