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 2026, 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.
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 ICD-10 code E26 identifies conditions related to excess production of aldosterone, a hormone controlling sodium and potassium balance. This section covers various types and causes, from primary forms like Conn’s syndrome to secondary and other hyperaldosteronism diagnoses.
The code E26 and its subcategories are used to classify different causes and presentations of hyperaldosteronism accurately. For example, E26.01 denotes Conn's syndrome, also known as primary hyperaldosteronism due to adrenal adenoma or aldosterone-producing adenoma. Coders can also assign E26.02 for glucocorticoid-remediable aldosteronism, which includes familial types. Other primary hyperaldosteronism types such as idiopathic or hyperplasia-related forms fall under E26.09. Secondary hyperaldosteronism, often linked to conditions like juxtaglomerular hyperplasia, is captured by E26.1. Additionally, E26.81 codes for Bartter’s syndrome, a genetic disorder presenting as hypokalemic and hypochloremic alkalosis. The unspecified hyperaldosteronism uses E26.9, covering cases without a defined cause. These distinctions help healthcare providers and coders document the specific pathology in patients with elevated aldosterone levels.
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, 2025 through September 30, 2026. 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 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
