ICD-10 Code E26.89 – Other Hyperaldosteronism (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code E26.89 – Other hyperaldosteronism
What it is
E26.89 identifies hyperaldosteronism that does not fit a more specific ICD-10-CM category. Use it when the record shows excess aldosterone production or effect, but the documented cause is not primary, secondary, or otherwise specified elsewhere.
Clinical signs
Clinical features vary; refer to documentation. Common findings may include hypertension, low potassium, muscle weakness, or metabolic alkalosis, but the diagnosis should be supported by the clinician’s assessment and workup.
When to use this code
Use this code when the provider documents “other hyperaldosteronism,” an atypical form, or a hyperaldosteronism diagnosis that is not further classified. It may also apply when the chart confirms aldosterone excess but does not identify a more specific subtype. Check documentation if the cause is unclear.
Do not use for
Do not use E26.89 for primary hyperaldosteronism, secondary hyperaldosteronism, or unspecified aldosteronism if another code is documented. Do not use it when the record names a separate adrenal disorder instead.
Coding tip
Code the most specific aldosteronism type documented, and query the provider if the note only says “hyperaldosteronism” without clarification.