E31.23: Multiple endocrine neoplasia [MEN] type IIB
E31.23 is the billable ICD-10-CM diagnosis code for Multiple endocrine neoplasia [MEN] type IIB. It is a fully specified code, so it can be reported on a claim (subject to clinical documentation and your payer's rules).
Frequently asked questions
What is ICD-10-CM code E31.23?
E31.23 is the ICD-10-CM diagnosis code for Multiple endocrine neoplasia [MEN] type IIB. It belongs to category E31 (Polyglandular dysfunction).
Is E31.23 a billable code?
Yes. E31.23 is a billable, fully specified ICD-10-CM code, so it can be used on a claim (subject to documentation and payer rules).
What category does E31.23 belong to?
E31.23 is part of ICD-10-CM category E31 — Polyglandular dysfunction, which has 16 billable codes.
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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
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