ICD-10-CM code "E21": Hyperparathyroidism and other disorders of parathyroid gland (2024)

Excludes

1. Endocrine, nutritional and metabolic diseases (E00-E89)

   Type 1transitory endocrine and metabolic disorders specific to newborn (P70-P74)

2. Disorders of other endocrine glands (E20-E35)

   Type 1galactorrhea (N64.3)

   Type 1gynecomastia (N62)

3. Hyperparathyroidism and other disorders of parathyroid gland (E21)

   Type 1adult osteomalacia (M83.-)

   Type 1ectopic hyperparathyroidism (E34.2)

   Type 1hungry bone syndrome (E83.81)

   Type 1infantile and juvenile osteomalacia (E55.0)

   Type 2familial hypocalciuric hypercalcemia (E83.52)

Includes

1. Endocrine, nutritional and metabolic diseases (E00-E89)
2. Disorders of other endocrine glands (E20-E35)
3. Hyperparathyroidism and other disorders of parathyroid gland (E21)

Subcategories

• 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)