E20.810 vs E83.5
E20.810 (Autosomal dominant hypocalcemia) compared with E83.5 (Disorders of calcium metabolism), 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. E83.5 carries an Excludes1 note covering E20.810: “autosomal dominant hypocalcemia (E20.810)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
No — do not report together. E83.5 carries an Excludes1 note covering E20.810: “parathyroid disorders (E20-E21)”
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
| E20.810Autosomal dominant hypocalcemia | E83.5Disorders of calcium metabolism | |
|---|---|---|
| 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 | Autosomal dominant hypocalcemia is a billable ICD-10-CM diagnosis code (E20.810). | Disorders of calcium metabolism is a non-billable ICD-10-CM category code (E83.5). |
| Includes | Autosomal dominant hypocalcemia type 1 (ADH1) Autosomal dominant hypocalcemia type 2 (ADH2) | — |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources