E20.812 vs E83.5
E20.812 (Autoimmune hypoparathyroidism) 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 E20.812: “autoimmune hypoparathyroidism (E20.812)”
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 E20.812: “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
| E20.812Autoimmune hypoparathyroidism | 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 | Autoimmune hypoparathyroidism is a billable ICD-10-CM diagnosis code (E20.812). | Disorders of calcium metabolism is a non-billable ICD-10-CM category code (E83.5). |
| Code first | , if applicable, underlying condition such as: autoimmune polyglandular failure (E31.0) | — |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources