E31 – Polyglandular dysfunction
ICD-10-CM 2027 diagnosis code · Disorders of other endocrine glands
ICD-10-CM code
E31
- Code
E31(claims format:E31)- Description
- Polyglandular dysfunction
- Billable
- No – use a more specific code below
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 4. Endocrine, nutritional and metabolic diseases (E00-E89)
- Block
- E20-E35 Disorders of other endocrine glands
Billable codes under E31
E31 is a header code and cannot be used on claims. Choose the most specific code:
- E31.0 – Autoimmune polyglandular failureBillable
- E31.1 – Polyglandular hyperfunctionBillable
- E31.2 – Multiple endocrine neoplasia [MEN] syndromesHeader (more codes below)
- E31.8 – Other polyglandular dysfunctionBillable
- E31.9 – Polyglandular dysfunction, unspecifiedBillable
Notes for E31
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
Block E20-E35
Frequently asked questions
What is ICD-10 code E31?
E31 is the ICD-10-CM code for polyglandular dysfunction, in the block E20-E35 (Disorders of other endocrine glands).
Is E31 a billable code?
No. E31 is a header code with more specific child codes; report one of the billable codes listed above.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.