ICD-10-CM category
E31 Polyglandular dysfunction
E31 is a category, not a billable code. Report one of the 8 complete codes below.
Codes in E31
- E31.0Autoimmune polyglandular failure
- E31.1Polyglandular hyperfunction
- E31.20Multiple endocrine neoplasia [MEN] syndrome, unspecified
- E31.21Multiple endocrine neoplasia [MEN] type I
- E31.22Multiple endocrine neoplasia [MEN] type IIA
- E31.23Multiple endocrine neoplasia [MEN] type IIB
- E31.8Other polyglandular dysfunction
- E31.9Polyglandular dysfunction, unspecified
Outside the US? E31 in the international WHO ICD-10 lists its inclusion and exclusion notes.
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ICD-10-CM is developed by the National Center for Health Statistics (NCHS), Centers for Disease Control and Prevention, U.S. Department of Health and Human Services, and is based on the WHO ICD-10. Codes and titles are reproduced unchanged from the FY2026 code list (effective 1 October 2025). Their use here does not imply endorsement by CDC, HHS or the U.S. Government. Changes effective on or after 1 October 2026 may not be reflected yet; check the current release at cdc.gov or cms.gov before submitting claims.
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