2026 ICD-10-CM Diagnosis Code E01Iodine-deficiency related thyroid disorders and allied conditions
E01 is a non-billable ICD-10-CM category code for iodine-deficiency related thyroid disorders and allied conditions, so it cannot be submitted on claims. Use a more specific code from this category instead, such as E01.0, E01.1, E01.2, and E01.8.
Code Identity
Code Classification
Specific Coding for Iodine-deficiency related thyroid disorders and allied condOverview
Non-specific codes like E01 require more characters. Use one of these billable codes instead:
Tabular List NotesGuidance
Coding notes and annotation back-references applicable to this code.
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.
Patient EducationClinical
Thyroid Diseases
Your thyroid is a small, butterfly-shaped gland in the front of your neck. It makes hormones that control the way the body uses energy. These hormones affect nearly every organ in your body and control many of your body's most important functions. For example, they affect your breathing, heart rate, weight, digestion, and moods.
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Code HistoryHistory
Questions About E01Overview
Is E01 a billable code?
No. This is a category header that groups the codes for iodine-deficiency related thyroid disorders and allied conditions, and headers cannot be submitted on claims. Claims for iodine-deficiency related thyroid disorders and allied conditions need a more specific code from this category, such as E01.0, E01.1, and E01.2.
