Subclinical iodine-deficiency hypothyroidism (E02) ICD-10-CM
The E02 code range covers subclinical iodine-deficiency hypothyroidism with 1 ICD-10-CM diagnosis codes. 1 of them are billable and valid for claim submission in fiscal year 2026, and the category headers group them but cannot themselves be billed.
Codes in the E02 Range 1 codes · 1 billable
- E02 Subclinical iodine-deficiency hypothyroidism
About the E02 Code Range
The ICD-10 code E02 is used to identify subclinical iodine-deficiency hypothyroidism, a mild form of hypothyroidism caused by inadequate iodine. This condition is often detected through laboratory tests before clear symptoms develop.
Subclinical iodine-deficiency hypothyroidism occurs when the thyroid gland function is slightly impaired due to a lack of iodine, an essential mineral for thyroid hormone production. The code E02 also covers related terms like iodine hypothyroidism and subclinical hypothyroidism, which refer to the same biochemical state with minimal or no clinical symptoms. It differs from overt hypothyroidism by its subtle presentation but requires monitoring to prevent progression. Notably, synonyms such as myxedema coma due to subclinical hypothyroidism highlight rare severe consequences if untreated. Medical coders and clinicians use the ICD-10 code for subclinical iodine-deficiency hypothyroidism to document this early thyroid disorder linked to iodine insufficiency, facilitating appropriate evaluation and treatment decisions.
Questions About This Page
How many billable codes are in the E02 range?
Of the 1 codes in this range, 1 are billable and valid for claim submission from October 1, 2025 through September 30, 2026. Category header codes group them but cannot be reported on claims.
What does the E02 range classify?
The range classifies subclinical iodine-deficiency hypothyroidism. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
