ICD-10 Code for Aldosteronism
The ICD-10-CM code for aldosteronism is E26.9 — Hyperaldosteronism, unspecified. This is the code the Alphabetic Index gives for aldosteronism with no further qualifier, valid for FY2027 (October 1, 2026 – September 30, 2027).
E26.9 is billable but unspecified. If the documentation names a type, site or cause, one of the more specific codes below is likely expected.
Which aldosteronism code should you use?
The Alphabetic Index lists 5 codes under Aldosteronism. Which one applies depends on the qualifier documented in the record — the type, site, cause, or associated condition. Find the qualifier below, then verify the code in the Tabular List before using it.
By type
| familial | E26.02 | Glucocorticoid-remediable aldosteronism |
| glucocorticoid-remediable | E26.02 | Glucocorticoid-remediable aldosteronism |
| primary | E26.09 | Other primary hyperaldosteronism |
| primary NEC | E26.09 | Other primary hyperaldosteronism |
| secondary | E26.1 | Secondary hyperaldosteronism |
| specified NEC | E26.89 | Other hyperaldosteronism |
Index terms and codes are reproduced from the official ICD-10-CM FY2027 release. The Alphabetic Index is a finding aid — a code must always be verified in the Tabular List before it is reported. Data sources