ICD-10 Code E26 – Hyperaldosteronism (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code E26 – Hyperaldosteronism
What it is
E26 identifies hyperaldosteronism, a disorder in which the adrenal glands produce too much aldosterone. This hormone excess can affect sodium, potassium, and fluid balance.
Clinical signs
Clinical features vary; refer to documentation. Common findings may include hypertension, low potassium, muscle weakness, or metabolic alkalosis when recorded by the clinician.
When to use this code
Use E26 when the provider documents hyperaldosteronism, primary aldosteronism, or another aldosterone excess disorder. Apply it when the diagnosis is confirmed or clearly stated in the record. If the note only suggests suspected disease, check documentation before coding.
Do not use for
Do not use E26 for nonspecific hypertension alone or for adrenal conditions without documented aldosterone excess. Check documentation if the record describes electrolyte abnormalities only.
Coding tip
Look for the exact provider diagnosis and any stated primary or secondary cause before assigning E26.