ICD-10 Code E26.09 – Other primary hyperaldosteronism (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code E26.09 – Other primary hyperaldosteronism
What it is
Other primary hyperaldosteronism is excess aldosterone production from the adrenal glands that is not classified as the classic forms. It causes inappropriate hormone secretion and is coded when the documentation specifies a nonclassic primary cause.
Clinical signs
Clinical features vary; refer to documentation. Common findings may include hypertension and signs of aldosterone excess, but you should code only when the record supports primary hyperaldosteronism.
When to use this code
Use E26.09 when the provider documents other primary hyperaldosteronism, including atypical or nonclassic primary aldosterone excess. It is appropriate when the diagnosis is established and the chart does not identify a more specific primary subtype. Check documentation if the cause is unclear.
Do not use for
Do not use this code for secondary hyperaldosteronism or for nonspecific hypertension without a documented diagnosis. If the chart only states elevated aldosterone or adrenal disorder, check documentation.
Coding tip
Code the documented primary diagnosis exactly; do not assume subtype from test results alone.