ICD-10-CM Code E21.5

Valid for Submission

E21.5 is a billable code used to specify a medical diagnosis of disorder of parathyroid gland, unspecified. The code is valid for the year 2020 for the submission of HIPAA-covered transactions. The ICD-10-CM code E21.5 might also be used to specify conditions or terms like anemia of endocrine disorder or anemia of parathyroid dysfunction or disorder of parathyroid gland or pituitary, parathyroid, thymus disorder.

Index to Diseases and Injuries

The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10 code(s). The following references for the code E21.5 are found in the index:

• - Disease, diseased - See Also: Syndrome;
  • - parathyroid (gland) - E21.5

• - Disorder (of) - See Also: Disease;
  • - parathyroid (gland) - E21.5

Synonyms

The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

• Anemia of endocrine disorder
• Anemia of parathyroid dysfunction
• Disorder of parathyroid gland
• Pituitary, parathyroid, thymus disorder

Diagnostic Related Groups

The ICD-10 code E21.5 is grouped in the following groups for version MS-DRG V37.0 What are Diagnostic Related Groups?
The Diagnostic Related Groups (DRGs) are a patient classification scheme which provides a means of relating the type of patients a hospital treats. The DRGs divides all possible principal diagnoses into mutually exclusive principal diagnosis areas referred to as Major Diagnostic Categories (MDC). applicable from 10/01/2020 through 09/30/2020.

• 643 - ENDOCRINE DISORDERS WITH MCC
• 644 - ENDOCRINE DISORDERS WITH CC
• 645 - ENDOCRINE DISORDERS WITHOUT CC/MCC

Convert E21.5 to ICD-9

• 252.9 - Parathyroid disorder NOS

Code Classification

• Endocrine, nutritional and metabolic diseases (E00–E90)
  • Disorders of other endocrine glands (E20-E35)
    • Hyperparathyroidism and other disorders of parathyroid gland (E21)

Code History

• FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016
  (First year ICD-10-CM implemented into the HIPAA code set)
• FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
• FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
• FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
• FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020

Tools

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• Convert E21.5 to ICD-9