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E21

Hyperparathyroidism and other disorders of parathyroid gland

Non-billableCategory

Chapter: 4. Endocrine, nutritional and metabolic diseases

Section: E20-E35 - Disorders of other endocrine glands

Coding Guidelines

Excludes1 (Mutually Exclusive)

These codes should never be used together with E21

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

Excludes2 (Not Included Here)

These conditions are not part of this code but may be reported additionally if documented

  • E83.52 - familial hypocalciuric hypercalcemia (E83.52)

Specific Codes (6)

E21.0Billable

Primary hyperparathyroidism

E21.1Billable

Secondary hyperparathyroidism, not elsewhere classified

E21.2Billable

Other hyperparathyroidism

E21.3Billable

Hyperparathyroidism, unspecified

E21.4Billable

Other specified disorders of parathyroid gland

E21.5Billable

Disorder of parathyroid gland, unspecified

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