ICD-10 Code I50.83 – High output heart failure (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I50.83 – High output heart failure
What it is
High output heart failure is a form of heart failure where the heart pumps more than usual but still cannot meet the body’s metabolic demands. It reflects an underlying condition causing increased circulatory demand or reduced systemic resistance.
Clinical signs
Patients may show classic heart failure findings such as dyspnea, edema, fatigue, and exercise intolerance. Clinical features vary; refer to documentation, especially for the underlying cause and evidence of high-output physiology.
When to use this code
Use I50.83 when the provider documents high output heart failure specifically. It may apply when heart failure is attributed to conditions such as severe anemia, thyrotoxicosis, or other causes of increased cardiac demand, if documented. Code the underlying condition separately when instructed.
Do not use for
Do not use this code for unspecified heart failure or other documented heart failure types without high-output physiology. Check documentation if the record only describes congestion, cardiomyopathy, or the underlying cause without naming high output heart failure.
Coding tip
Assign this code only when the provider clearly links heart failure to a high-output state; otherwise, query or code the documented heart failure type.