E21 vs E55.0
E21 (Hyperparathyroidism and other disorders of parathyroid gland) compared with E55.0 (Rickets, active), 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. E21 carries an Excludes1 note covering E55.0: “infantile and juvenile osteomalacia (E55.0)”
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
| E21Hyperparathyroidism and other disorders of parathyroid gland | E55.0Rickets, active | |
|---|---|---|
| Billing status | Non-billable header | Billable |
| Classification | E00-E89 — Endocrine, Nutritional and Metabolic Diseases (E00-E89) | E00-E89 — Endocrine, Nutritional and Metabolic Diseases (E00-E89) |
| Definition | Hyperparathyroidism and other disorders of parathyroid gland is a non-billable ICD-10-CM category code (E21). | Rickets, active is a billable ICD-10-CM diagnosis code (E55.0). |
| Includes | — | Infantile osteomalacia Juvenile osteomalacia |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources