ICD-10 Code I50.814 – Right heart failure due to left heart failure (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I50.814 – Right heart failure due to left heart failure
What it is
This code identifies right-sided heart failure that develops because of left-sided heart failure. Use it when the record clearly links the right heart failure to the left heart failure.
Clinical signs
Clinical features may include findings of systemic venous congestion such as peripheral edema, jugular venous distention, or hepatic congestion. Clinical features vary; refer to documentation.
When to use this code
Use I50.814 when the provider documents right heart failure as due to, or secondary to, left heart failure. It is appropriate when both conditions are stated and the causal relationship is documented or clearly implied. If the cause is not specified, check documentation.
Do not use for
Do not use this code for isolated left heart failure without right-sided involvement. Also avoid it when right heart failure is present but no link to left heart failure is documented.
Coding tip
Look for explicit wording such as “due to,” “secondary to,” or “from” to support the causal relationship.