E23.2 vs E87
E23.2 (Diabetes insipidus) compared with E87 (Other disorders of fluid, electrolyte and acid-base balance), from the official CMS tabular data. Do not report these codes together: the official tabular list marks them Excludes1.
Can these codes be reported together?
No — do not report together. E87 carries an Excludes1 note covering E23.2: “diabetes insipidus (E23.2)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
Side by side
| E23.2Diabetes insipidus | E87Other disorders of fluid, electrolyte and acid-base balance | |
|---|---|---|
| Billing status | Billable | Non-billable header |
| Classification | E00-E89 — Endocrine, Nutritional and Metabolic Diseases (E00-E89) | E00-E89 — Endocrine, Nutritional and Metabolic Diseases (E00-E89) |
| Definition | Diabetes insipidus is a billable ICD-10-CM diagnosis code (E23.2). | Other disorders of fluid, electrolyte and acid-base balance is a non-billable ICD-10-CM category code (E87). |
| Includes | the listed conditions whether the disorder is in the pituitary or the hypothalamus | — |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources