E20.9 vs R29.0
E20.9 (Hypoparathyroidism, unspecified) compared with R29.0 (Tetany), 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. E20.9 carries an Excludes1 note covering R29.0: “tetany NOS (R29.0)”
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. R29.0 carries an Excludes1 note covering E20.9: “parathyroid tetany (E20.9)”
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
| E20.9Hypoparathyroidism, unspecified | R29.0Tetany | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | E00-E89 — Endocrine, Nutritional and Metabolic Diseases (E00-E89) | R00-R99 — Symptoms, Signs and Abnormal Clinical and Laboratory Findings, Not Elsewhere Classified (R00-R99) |
| Definition | Hypoparathyroidism, unspecified is a billable ICD-10-CM diagnosis code (E20.9). | Tetany is a billable ICD-10-CM diagnosis code (R29.0). |
| Includes | Parathyroid tetany | Carpopedal spasm |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources