E23 — Hypofunction and other disorders of the pituitary gland
Is E23 billable?
No — E23 is a non-billable header code. E23 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 6 billable codes beneath E23.
E23 at a glance
| Code | E23 |
|---|---|
| Description | Hypofunction and other disorders of the pituitary gland |
| 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 E23 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
Includes
Conditions classified to E23.
- the listed conditions whether the disorder is in the pituitary or the hypothalamus
Excludes1 — never code together — inherited from Chapter 4
The conditions below can never be reported together with E23 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 E23 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 E23? (6)
How long has E23 existed?
E23 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 E23?
ICD-10-CM declares these codes mutually exclusive with E23 — exactly one of each pair can be correct for a given encounter.