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  3. Ch. E00-E89
  4. Sec. E20-E35
  5. Category E21
Category E21

Hyperparathyroidism and other disorders of parathyroid gland

Clinical Classification Guidelines

Specific Diagnosis Codes

Primary hyperparathyroidism
E21.0
Secondary hyperparathyroidism, not elsewhere classified
E21.1
Other hyperparathyroidism
E21.2
Hyperparathyroidism, unspecified
E21.3
Other specified disorders of parathyroid gland
E21.4
Disorder of parathyroid gland, unspecified
E21.5
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Data updated for October 2025 release.

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