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ICD-10-CM 2027 diagnosis code

E20.8Other hypoparathyroidism

Not billable — use a more specific code

E20.8 is a header code, so it can't be reported by itself. Choose one of the 2 more specific codes beneath it.

Code last changed in FY2024 (effective October 1, 2023). Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About E20.8

E20.8 is the ICD-10-CM diagnosis code for other hypoparathyroidism. It belongs to category E20 (hypoparathyroidism), block E20-E35 (disorders of other endocrine glands) and chapter 4 (endocrine, nutritional and metabolic diseases). It is a header code, so it can't be reported by itself; one of its 2 subcodes must be used instead.

Within E20, choose E20.8 (Other hypoparathyroidism) only when documentation doesn't support a more specific option: idiopathic hypoparathyroidism (E20.0), Pseudohypoparathyroidism (E20.1) and unspecified (E20.9).

To report this condition, pick the subcode that matches the documentation: E20.81 (secretion) and E20.89 (hypoparathyroidism).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015, and changed in FY2024 (expanded into subcodes).

Before ICD-10, this condition was coded in ICD-9-CM as 252.1 (hypoparathyroidism).

Specific codes under E20.8

Notes that apply from higher levels

Instructions written at a parent level also apply to E20.8.

› From E20 Hypoparathyroidism
Excludes1
  • Di George's syndrome (D82.1)
  • postprocedural hypoparathyroidism (E89.2)
  • tetany NOS (R29.0)
  • transitory neonatal hypoparathyroidism (P71.4)

Broader instructions also apply from E20-E35 Disorders of other endocrine glands and Chapter 4: Endocrine, nutritional and metabolic diseases.

ICD-9-CM equivalent

Converter →
  • 252.1Hypoparathyroidismapproximate

From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • FY2024 (effective 10/1/2023): Expanded — no longer billable

Common questions about E20.8

Is E20.8 billable?

No. E20.8 is a header code. Report one of its more specific subcodes instead.

What is the ICD-9 code for E20.8?

The CMS General Equivalence Mappings map E20.8 to ICD-9-CM 252.1.