E21 Hyperparathyroidism and other disorders of parathyroid gland

Non-billable header with 6 child codes.

Excludes1 (never code together)

• adult osteomalacia (M83.-)
• ectopic hyperparathyroidism (E34.2)
• hungry bone syndrome (E83.81)
• infantile and juvenile osteomalacia (E55.0)

Excludes2 (not included here)

• familial hypocalciuric hypercalcemia (E83.52)

Applies from E21 Hyperparathyroidism and other disorders of parathyroid gland

Excludes1 (never code together)

• adult osteomalacia (M83.-)
• ectopic hyperparathyroidism (E34.2)
• hungry bone syndrome (E83.81)
• infantile and juvenile osteomalacia (E55.0)

Excludes2 (not included here)

• familial hypocalciuric hypercalcemia (E83.52)

Codes under E21

• 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

Code annotations containing back-references to E21

Back-references to E21

• Type 1 Excludes: E83 Disorders of mineral metabolism ("parathyroid disorders (E20-E21)")
• Code First: G63 Polyneuropathy in diseases classified elsewhere ("endocrine disease, except diabetes (E00-E07, E15-E16, E20-E34)")
• Code First: M14.8 Arthropathies in other specified diseases classified elsewhere ("hyperparathyroidism (E21.-)")

Back-references to E21

• Type 1 Excludes: E83 Disorders of mineral metabolism ("parathyroid disorders (E20-E21)")
• Code First: G63 Polyneuropathy in diseases classified elsewhere ("endocrine disease, except diabetes (E00-E07, E15-E16, E20-E34)")
• Code First: M14.8 Arthropathies in other specified diseases classified elsewhere ("hyperparathyroidism (E21.-)")

Nearby codes

• E21 Hyperparathyroidism and other disorders of parathyroid gland (this code)
• 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