E21 Hyperparathyroidism and other disorders of parathyroid gland
ICD-10-CM category E21 sits in Chapter 4 (Endocrine, nutritional and metabolic diseases, E00-E89). It contains 6 billable codes for FY2027, effective October 1, 2026 to September 30, 2027. Always code to the most specific code available: a code with more characters that describes the diagnosis more precisely takes priority over a shorter one.
Billable codes in E21
| Code | Description |
|---|---|
E21.0 | Primary hyperparathyroidism |
E21.1 | Secondary hyperparathyroidism, not elsewhere classified |
E21.2 | Other hyperparathyroidism |
E21.3 | Hyperparathyroidism, unspecified |
E21.4 | Other specified disorders of parathyroid gland |
E21.5 | Disorder of parathyroid gland, unspecified |
Search within ICD-10-CM for E21 and related codes
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