E29.1 vs E87
E29.1 (Testicular hypofunction) 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 E29.1: “5-alpha-reductase deficiency (E29.1)”
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
| E29.1Testicular hypofunction | 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 | Testicular hypofunction is a billable ICD-10-CM diagnosis code (E29.1). | Other disorders of fluid, electrolyte and acid-base balance is a non-billable ICD-10-CM category code (E87). |
| Includes | Defective biosynthesis of testicular androgen NOS 5-Alpha-reductase deficiency (with male pseudohermaphroditism) Testicular hypogonadism NOS | — |
| Use additional code | code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5) | — |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources