E21

Hyperparathyroidism and other disorders of parathyroid gland

Non-billable header

E21 is a non-billable header code. Use one of the more specific codes below.

Inclusion terms

Includes

  • Note: All neoplasms, whether functionally active or not, are classified in Chapter 2. Appropriate codes in this chapter (i.e. E05.8, E07.0, E16-E31, E34.-) may be used as additional codes to indicate either functional activity by neoplasms and ectopic endocrine tissue or hyperfunction and hypofunction of endocrine glands associated with neoplasms and other conditions classified elsewhere.

Excludes1

Not coded here — never report together with this code.

  • transitory endocrine and metabolic disorders specific to newborn (P70-P74)
  • galactorrhea (N64.3)
  • gynecomastia (N62)
  • adult osteomalacia (M83.-)
  • ectopic hyperparathyroidism (E34.2)
  • hungry bone syndrome (E83.81)
  • infantile and juvenile osteomalacia (E55.0)

Excludes2

Not included here — may be reported together when both conditions exist.

  • familial hypocalciuric hypercalcemia (E83.52)

More specific codes E21

  • E21.0Primary hyperparathyroidismBillable
  • E21.1Secondary hyperparathyroidism, not elsewhere classifiedBillable
  • E21.2Other hyperparathyroidismBillable
  • E21.3Hyperparathyroidism, unspecifiedBillable
  • E21.4Other specified disorders of parathyroid glandBillable
  • E21.5Disorder of parathyroid gland, unspecifiedBillable

Related codes

  • E20HypoparathyroidismHeader
  • E22Hyperfunction of pituitary glandHeader
  • E23Hypofunction and other disorders of the pituitary glandHeader
  • E24Cushing's syndromeHeader
  • E25Adrenogenital disordersHeader
  • E26HyperaldosteronismHeader
  • E27Other disorders of adrenal glandHeader
  • E28Ovarian dysfunctionHeader
  • E29Testicular dysfunctionHeader
  • E30Disorders of puberty, not elsewhere classifiedHeader
  • E31Polyglandular dysfunctionHeader
  • E32Diseases of thymusHeader
  • E34Other endocrine disordersHeader
  • E35Disorders of endocrine glands in diseases classified elsewhereBillable

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