ICD-10-CM › E00-E89 › E20-E35 › E21 Hyperparathyroidism and other... › E21.4

E21.4

Other specified disorders of parathyroid gland

ValidICD-10-CM diagnosis code.

Valid for claims with a date of service in the current code year.

Valid FY2016 onwards.

What has happened to this code

Every change the publisher made, from 2007 to now. Entries marked draft are from the pre-implementation releases: ICD-10 took effect on 1 October 2015, so nothing before FY2016 was ever valid on a claim.

  1. FY2007 Added to the draft code set draft Other specified disorders of parathyroid gland

Official coding rules

Published by CDC for FY2027. A rule attached to a category binds every code beneath it, so the rules inherited from this code's ancestors are shown with the code they come from.

Inherited from E21 Hyperparathyroidism and other disorders of parathyroid gland

Excludes1 - never coded here

  • 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)

Inherited from the E20-E35 section Disorders of other endocrine glands (E20-E35)

Excludes1 - never coded here

  • galactorrhea (N64.3)
  • gynecomastia (N62)

How CDC's index refers to this code

Wording from the official alphabetic index. Much of it appears nowhere in the code description, which is why a search for the everyday phrase so often finds nothing.

Codes in the same group

CodeDescriptionStatus
E21.0 Primary hyperparathyroidism Valid
E21.1 Secondary hyperparathyroidism, not elsewhere classified Valid
E21.2 Other hyperparathyroidism Valid
E21.3 Hyperparathyroidism, unspecified Valid
E21.5 Disorder of parathyroid gland, unspecified Valid