E31.1

ICD-10Billable

Polyglandular hyperfunction

Official ICD-10-CM descriptor (FY2026)

Polyglandular hyperfunction

E31.1 is valid for submission on a claim — CMS flags it as a billable, specific code.

Excludes1

Not coded here. An Excludes1 code should never be reported at the same time as the code above it.

  • multiple endocrine adenomatosis (E31.2-)
  • multiple endocrine neoplasia (E31.2-)

Related codes in E31

Where this code sits

Parent code
E31

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Source

ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.

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