E23: Hypofunction and other disorders of the pituitary gland
Codes under E23 (Hypofunction and other disorders of the pituitary gland). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.
| Code | Description | Billable |
|---|---|---|
| E23.0 | Hypopituitarism | ✓ |
| E23.0 | Hypopituitarism | ✓ |
| E23.1 | Drug-induced hypopituitarism | ✓ |
| E23.1 | Drug-induced hypopituitarism | ✓ |
| E23.2 | Diabetes insipidus | ✓ |
| E23.2 | Diabetes insipidus | ✓ |
| E23.3 | Hypothalamic dysfunction, not elsewhere classified | ✓ |
| E23.3 | Hypothalamic dysfunction, not elsewhere classified | ✓ |
| E23.6 | Other disorders of pituitary gland | ✓ |
| E23.6 | Other disorders of pituitary gland | ✓ |
| E23.7 | Disorder of pituitary gland, unspecified | ✓ |
| E23.7 | Disorder of pituitary gland, unspecified | ✓ |
Frequently asked questions
What is ICD-10-CM code E23?
E23 is an ICD-10-CM category covering Hypofunction and other disorders of the pituitary gland. It contains 12 more specific diagnosis codes, 12 of which are billable.
Is E23 a billable code?
No — E23 is a category header and isn't billable on its own. Code to the highest level of specificity using one of its subcodes (for example E23.0 — Hypopituitarism). 12 of the 12 codes under E23 are billable.
What codes fall under E23?
E23 includes E23.0, E23.0, E23.1, E23.1, E23.2, plus 7 more. See the full list with descriptions and billable status above.
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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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