ICD-10-CM 2027 diagnosis code
E05.0Thyrotoxicosis with diffuse goiter
E05.0 is a header code, so it can't be reported by itself. Choose one of the 2 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 E05.0
E05.0 is the ICD-10-CM diagnosis code for thyrotoxicosis with diffuse goiter. It belongs to category E05 (thyrotoxicosis [hyperthyroidism]), 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 2 subcodes must be used instead.
Within E05 (thyrotoxicosis [hyperthyroidism]), E05.0 is specifically for thyrotoxicosis with diffuse goiter. Related codes cover thyrotoxicosis with toxic single thyroid nodule (E05.1), thyrotoxicosis with toxic multinodular goiter (E05.2), thyrotoxicosis from ectopic thyroid tissue (E05.3), thyrotoxicosis factitia (E05.4), other thyrotoxicosis (E05.8) and thyrotoxicosis, unspecified (E05.9).
To report this condition, pick the subcode that matches the documentation: E05.00 (without thyrotoxic crisis or storm) and E05.01 (with thyrotoxic crisis or storm).
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 E05.0
Coding notes
- Exophthalmic or toxic goiter NOS
- Graves' disease
- Toxic diffuse goiter
Notes that apply from higher levels
Instructions written at a parent level also apply to E05.0.
Broader instructions also apply from Chapter 4: Endocrine, nutritional and metabolic diseases.
Codes whose notes reference E05.0
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- No changes since FY2016.
Common questions about E05.0
Is E05.0 billable?
- No. E05.0 is a header code. Report one of its more specific subcodes instead.