E01
ICD-10Non-billable categoryIodine-deficiency related thyroid disorders and allied cond
Official ICD-10-CM descriptor (FY2026)
Iodine-deficiency related thyroid disorders and allied conditions
E01 is a category heading, not a billable code. CMS does not accept it on a claim; report one of the more specific codes beneath it.
Excludes1
Not coded here. An Excludes1 code should never be reported at the same time as the code above it.
- congenital iodine-deficiency syndrome (E00.-)
- subclinical iodine-deficiency hypothyroidism (E02)
More specific codes under E01
Where this code sits
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ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.