ICD-10-CM 2027 diagnosis code

E06Thyroiditis

Not billable — use a more specific code

E06 is a header code, so it can't be reported by itself. Choose one of the 7 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 E06

E06 is the ICD-10-CM diagnosis code for thyroiditis. 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 7 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: E06.0 (thyroiditis), E06.1 (thyroiditis), E06.2 (thyrotoxicosis), E06.3 (thyroiditis), E06.4 (thyroiditis), E06.5 (thyroiditis) and E06.9 (unspecified).

Don't report E06 together with the conditions in its Excludes1 note: postpartum thyroiditis (O90.5).

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 E06

Coding notes

Excludes1Not coded here — never report together with this code

postpartum thyroiditis (O90.5)

Notes that apply from higher levels

Instructions written at a parent level also apply to E06.

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

Code history

2016
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2026
2027

FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
No changes since FY2016.

Common questions about E06

Is E06 billable?: No. E06 is a header code. Report one of its more specific subcodes instead.