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ICD-10-CM Diagnosis Codes →
section notes
4. Endocrine, nutritional and metabolic diseases (E00-E89) →
section notes
E20-E35 Disorders of other endocrine glands (E20-E35) →
section notes
E21 Hyperparathyroidism and other disorders of parathyroid gland →
section notes
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
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