Hyperaldosteronism (E26) ICD-10-CM
The E26 code range covers hyperaldosteronism with 10 ICD-10-CM diagnosis codes. 7 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.
Codes in the E26 Range 10 codes · 7 billable
- E26 HyperaldosteronismNon-billable
- E26.0 Primary hyperaldosteronismNon-billable
- E26.01 Conn's syndrome
- E26.02 Glucocorticoid-remediable aldosteronism
- E26.09 Other primary hyperaldosteronism
- E26.1 Secondary hyperaldosteronism
- E26.8 Other hyperaldosteronismNon-billable
- E26.81 Bartter's syndrome
- E26.89 Other hyperaldosteronism
- E26.9 Hyperaldosteronism, unspecified
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the E26 range.
Bartter Syndrome
A group of disorders caused by defective salt reabsorption in the ascending LOOP OF HENLE. It is characterized by severe salt-wasting, HYPOKALEMIA; HYPERCALCIURIA; metabolic ALKALOSIS, and hyper-reninemic HYPERALDOSTERONISM without HYPERTENSION. There are several subtypes including ones due to mutations in the renal specific SODIUM-POTASSIUM-CHLORIDE SYMPORTERS.
Conn Syndrome
Primary hyperaldosteronism caused by the excess production of ALDOSTERONE by an ADENOMA of the ZONA GLOMERULOSA or CONN ADENOMA.
Familial Hyperaldosteronism Type 1
Familial hyperaldosteronism caused by a chimeric gene containing regions of CYP11B1 and CYP11B2. This condition is responsive to exogenous glucocorticoids.
Hyperaldosteronism
A condition caused by the overproduction of ALDOSTERONE. It is characterized by sodium retention and potassium excretion with resultant HYPERTENSION and HYPOKALEMIA.
About the E26 Code Range
Hyperaldosteronism means the body produces too much aldosterone. It causes sodium retention and potassium loss, with high blood pressure and low potassium.
E26 separates primary, secondary, other and unspecified hyperaldosteronism. Primary hyperaldosteronism includes Conn's syndrome, glucocorticoid-remediable aldosteronism and other primary forms. The other hyperaldosteronism branch includes Bartter's syndrome and a further other category.
Questions About This Page
How many billable codes are in the E26 range?
Of the 10 codes in this range, 7 are billable and valid for claim submission from October 1, 2026 through September 30, 2027. Category header codes group them but cannot be reported on claims.
What does the E26 range classify?
The range classifies hyperaldosteronism. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
