E31.20
✓ BillableMultiple endocrine neoplasia [MEN] syndrome, unspecified
Endocrine, nutritional and metabolic diseases (E00-E89)
Also Known As
❌ Excludes1
inheritedRules inherited from parent codes in the hierarchy.
- • ataxia telangiectasia [Louis-Bar] (G11.3)
- • dystrophia myotonica [Steinert] (G71.11)
- • pseudohypoparathyroidism (E20.1)
Clinical Description
ICD-10-CM code E31.20 represents multiple endocrine neoplasia [men] syndrome, unspecified. This code falls under the Endocrine, nutritional and metabolic diseases (E00-E89) classification. It is a billable/specific code valid for HIPAA-covered transactions as of October 1, 2025 (FY2026). This code can be used to indicate a diagnosis for reimbursement purposes on insurance claims.
This is a 6-character code at the 5th level of specificity. This is the most specific code available in this subcategory. Coders should note that E31.20 has 3 Excludes1 restriction(s) — codes that cannot be reported together on the same claim.
Frequently Asked Questions
What is ICD-10 code E31.20?
ICD-10-CM code E31.20 is "Multiple endocrine neoplasia [MEN] syndrome, unspecified". It belongs to the category: Endocrine, nutritional and metabolic diseases (E00-E89).
Is E31.20 a billable ICD-10 code?
Yes, E31.20 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
What codes are excluded with E31.20?
E31.20 has 3 Excludes1 rule(s). These codes are mutually exclusive and cannot be coded together on the same claim.
Related Codes in E31.2
Other codes in the same category that may be relevant for differential coding:
🧪 Validate Combinations
Add E31.20 to the Excludes Checker to validate against your full code list.
Open in Checker →Code Information
Data Source
CMS ICD-10-CM 2026 Tabular List
Updated October 1, 2025 (FY2026)