E31 — Polyglandular dysfunction
Is E31 billable?
No — E31 is a non-billable header code. E31 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 8 billable codes beneath E31.
Billable codes under this header
- E31.0Autoimmune polyglandular failure
- E31.1Polyglandular hyperfunction
- E31.8Other polyglandular dysfunction
- E31.9Polyglandular dysfunction, unspecified
- E31.20Multiple endocrine neoplasia [MEN] syndrome, unspecified
- E31.21Multiple endocrine neoplasia [MEN] type I
- E31.22Multiple endocrine neoplasia [MEN] type IIA
- E31.23Multiple endocrine neoplasia [MEN] type IIB
E31 at a glance
| Code | E31 |
|---|---|
| Description | Polyglandular dysfunction |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Excludes1 — never code together
The conditions below can never be reported together with E31 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
Excludes1 — never code together — inherited from Chapter 4
The conditions below can never be reported together with E31 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- transitory endocrine and metabolic disorders specific to newborn (P70-P74)
Excludes1 — never code together — inherited from E20-E35
The conditions below can never be reported together with E31 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
What codes fall under E31? (5)
How long has E31 existed?
E31 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.
Which codes are confused with E31?
ICD-10-CM declares these codes mutually exclusive with E31 — exactly one of each pair can be correct for a given encounter.