E31

⚠ Non-billable (Header)

Polyglandular dysfunction

Endocrine, nutritional and metabolic diseases (E00-E89)

⚠️ This is a category header code — not billable. Use a more specific child code below.

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❌ Excludes1

direct

These codes are mutually exclusive. Never code them together.

• ataxia telangiectasia [Louis-Bar] (G11.3)
• dystrophia myotonica [Steinert] (G71.11)
• pseudohypoparathyroidism (E20.1)

Child Codes (5)

E31.0Autoimmune polyglandular failure✓ Billable E31.1Polyglandular hyperfunction✓ Billable E31.2Multiple endocrine neoplasia [MEN] syndromesHeader E31.8Other polyglandular dysfunction✓ Billable E31.9Polyglandular dysfunction, unspecified✓ Billable

Clinical Description

ICD-10-CM code E31 represents polyglandular dysfunction. This code falls under the Endocrine, nutritional and metabolic diseases (E00-E89) classification. It is a non-billable category header code. A more specific child code from the list below must be used for billing and reimbursement purposes.

Frequently Asked Questions

What is ICD-10 code E31?

ICD-10-CM code E31 is "Polyglandular dysfunction". It belongs to the category: Endocrine, nutritional and metabolic diseases (E00-E89).

Is E31 a billable ICD-10 code?

No, E31 is a non-billable header code. A more specific child code must be used for billing.

What codes are excluded with E31?

E31 has 3 Excludes1 rule(s). These codes are mutually exclusive and cannot be coded together on the same claim.

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Code Information

CodeE31

BillableNo — Header code

CategoryEndocrine, nutritional and metabolic diseases (E00-E89)

Excludes13 rule(s)

Excludes20 note(s)

Child codes5

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)