ICD10

ICD-10 Code E01: Iodine-deficiency related thyroid disorders and allied conditions

E01 is an ICD-10 diagnosis entry used to group records related to Iodine-deficiency related thyroid disorders and allied conditions. You may see this entry in coding references, medical records, or claims workflows when a broader diagnosis category is being reviewed before a more specific code is chosen. ICD-10 entries help standardize how diagnoses are organized for coding, reporting, analytics, and documentation. This code sits within the broader ICD-10 area for Endocrine, nutritional and metabolic diseases (E00-E89).

Reviewed by HealthAssure Clinical TeamUpdated 21 May 2026

What is this code?

ICD-10 entries help standardize how diagnoses are organized for coding, reporting, analytics, and documentation. This code sits within the broader ICD-10 area for Endocrine, nutritional and metabolic diseases (E00-E89).

When is it used?

  • May be used when a clinician documents iodine-deficiency related thyroid disorders and allied conditions in a patient's medical record.
  • May appear in hospital records, claims, referrals, and clinical documentation.
  • This code may act more like a grouping or parent code, so a more specific child code may be used in final documentation when available.

What it does not mean

  • A code alone does not explain severity, treatment plan, or outcome.
  • A medical code should not be treated as a substitute for a doctor's diagnosis or advice.
  • This entry may represent a broader category rather than the most specific billable code.

Code hierarchy

chapter
4Endocrine, nutritional and metabolic diseases (E00-E89)
block
E00-E07Disorders of thyroid gland
currentE00-E07

Official coding notes

Excludes1 (do not code together)
  • congenital iodine-deficiency syndrome (E00.-)
  • subclinical iodine-deficiency hypothyroidism (E02)

Where you may see this code

You may see this entry in coding references, medical records, or claims workflows when a broader diagnosis category is being reviewed before a more specific code is chosen.

Related specialists

EndocrinologistGeneral Physician

Coding guidelines

Compatibility

Legacy code aligns to an official FY 2026 category. Frontend should resolve to the official category page and surface the billable child codes.
Legacy codes
E01
Replacement codes
E01.0 — Iodine-deficiency related diffuse (endemic) goiterE01.1 — Iodine-deficiency related multinodular (endemic) goiterE01.2 — Iodine-deficiency related (endemic) goiter, unspecifiedE01.8 — Other iodine-deficiency related thyroid disorders and allied conditions

Common synonyms

Iodine-deficiency related thyroid disorders and allied conditions

Frequently asked questions

Code details

CodeE01
SystemICD10
Display nameIodine-deficiency related thyroid disorders and allied conditions
ChapterEndocrine, nutritional and metabolic diseases (E00-E89)
BlockDisorders of thyroid gland

Flags

BillableNo
Valid clinical useNo

Source

SourceICD-10
Version2026-annual
Releaseannual
Year2026

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.