Iodine-deficiency related thyroid disorders and allied conditions (E01) ICD-10-CM
The E01 code range covers iodine-deficiency related thyroid disorders and allied conditions with 5 ICD-10-CM diagnosis codes. 4 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
Codes in the E01 Range 5 codes · 4 billable
- E01 Iodine-deficiency related thyroid disorders and allied conditionsNon-billable
- E01.0 Iodine-deficiency related diffuse (endemic) goiter
- E01.1 Iodine-deficiency related multinodular (endemic) goiter
- E01.2 Iodine-deficiency related (endemic) goiter, unspecified
- E01.8 Other iodine-deficiency related thyroid disorders and allied conditions
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the E01 range.
Diffuse Endemic Goiter
A diffuse goiter caused by inadequate iodine intake.
Endemic Goiter
Thyroid gland enlargement caused by inadequate dietary iodine intake. It occurs in areas in which the soil lacks iodine compounds or there is low seafood consumption.
Multinodular Endemic Goiter
A multinodular goiter caused by inadequate iodine intake.
About the E01 Code Range
Iodine deficiency relates to these thyroid disorders, including goiter, an enlarged thyroid, and other allied conditions.
Within E01, the subdivisions distinguish the form of goiter. E01.0 identifies diffuse goiter, and E01.1 identifies multinodular goiter. E01.2 does not specify the form. E01.8 covers other iodine-deficiency related thyroid disorders and allied conditions.
Questions About This Page
How many billable codes are in the E01 range?
Of the 5 codes in this range, 4 are billable and valid for claim submission from October 1, 2026 through September 30, 2027. Category header codes group them but cannot be reported on claims.
What does the E01 range classify?
The range classifies iodine-deficiency related thyroid disorders and allied conditions. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
