Is ICD-10-CM code E26 billable?

No, E26 (Hyperaldosteronism) is a non-billable ICD-10-CM code. It must be coded to a more specific subcategory before it can be used for reimbursement.

What chapter does ICD-10-CM code E26 belong to?

E26 belongs to Chapter 4 of the ICD-10-CM tabular list: E00–E89 (Endocrine, Nutritional and Metabolic Diseases).

E26Non-billable

Hyperaldosteronism

Endocrine, Nutritional and Metabolic Diseases·Disorders of other endocrine glands (E20-E35)·category·FY 2026

Use a more specific code (2 billable, 2 non-billable)

E26.0Primary hyperaldosteronismhas subcodes E26.1Secondary hyperaldosteronism E26.8Other hyperaldosteronismhas subcodes E26.9Hyperaldosteronism, unspecified

CH4 Parent Instructions

Excludes1(Not coded here. Use a different code.)

transitory endocrine and metabolic disorders specific to newborn (P70-P74)

E20-E35 Parent Instructions

Excludes1(Not coded here. Use a different code.)

galactorrhea (N64.3)
gynecomastia (N62)

Clinical Hierarchy

BillableHas subcodes

CH4Endocrine, nutritional and metabolic diseases (E00-E89)

E20-E35Disorders of other endocrine glands (E20-E35)

E26HyperaldosteronismNot billable

E26.0Primary hyperaldosteronismSubcodes

E26.1Secondary hyperaldosteronismBillable

E26.8Other hyperaldosteronismSubcodes

E26.9Hyperaldosteronism, unspecifiedBillable

MS-DRG Classification

2026

No direct MS-DRG triggers identified.