Skip to content
Dx

ICD-10-CM 2027 diagnosis code

E03Other hypothyroidism

Not billable — use a more specific code

E03 is a header code, so it can't be reported by itself. Choose one of the 8 more specific codes beneath it.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About E03

E03 is the ICD-10-CM diagnosis code for other hypothyroidism. It belongs to block E00-E07 (disorders of thyroid gland) and chapter 4 (endocrine, nutritional and metabolic diseases). It is a header code, so it can't be reported by itself; one of its 8 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: E03.0 (goiter), E03.1 (goiter), E03.2 (substances), E03.3 (hypothyroidism), E03.4 ((acquired)), E03.5 (coma), E03.8 (hypothyroidism) and E03.9 (unspecified).

Don't report E03 together with the conditions in its Excludes1 note: iodine-deficiency related hypothyroidism (E00-E02) and postprocedural hypothyroidism (E89.0).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Specific codes under E03

Coding notes

Excludes1Not coded here — never report together with this code
  • iodine-deficiency related hypothyroidism (E00-E02)
  • postprocedural hypothyroidism (E89.0)

Notes that apply from higher levels

Instructions written at a parent level also apply to E03.

Broader instructions also apply from Chapter 4: Endocrine, nutritional and metabolic diseases.

Codes whose notes reference E03

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)
  • No changes since FY2016.

Common questions about E03

Is E03 billable?

No. E03 is a header code. Report one of its more specific subcodes instead.