U.S. ICD-10-CM · FY 2027

E03 ICD-10-CM Code: Other hypothyroidism

A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.

Code definition

Official description

E03

Other hypothyroidism

ICD-10-CM diagnosis code · United States clinical modification

Classification

Where E03 sits

  1. 1

    Chapter 4

    Endocrine, nutritional and metabolic diseases (E00-E89)

  2. 2

    Section

    Disorders of thyroid gland (E00-E07)

  3. 3

    Category E03

    Other hypothyroidism

  4. 4

    Code E03

    Other hypothyroidism

More specific choices

Codes under E03

E03 is a non-billable category. Choose the child code that best matches the documented diagnosis.

Documentation details

Notes for this code

Inclusion terms

No inclusion terms are listed for E03.

Code first

No “code first” instruction is listed for E03.

Use additional code

No “use additional code” instruction is listed for E03.

Excludes1

Conditions that should not be reported together with this code.

  • iodine-deficiency related hypothyroidism (E00-E02)
  • postprocedural hypothyroidism (E89.0)

Excludes2

Conditions not included here that may be reported separately when present.

No Excludes2 note is listed for E03.

Transparency

Source and release

Data release

U.S. ICD-10-CM · FY 2027

Effective date

Oct 1, 2026

This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.

Review the CDC/NCHS ICD-10-CM source

Code-specific guidance

Frequently asked questions

What does ICD-10-CM code E03 mean?

E03 is the FY 2027 U.S. ICD-10-CM code for “Other hypothyroidism.”

Is E03 a billable or specific ICD-10-CM code?

No. E03 has more specific child codes in the FY 2027 reference data. Select the code that matches the documentation and confirm the active code set and payer requirements.

Where is E03 located in ICD-10-CM?

E03 is listed in Chapter 4, Endocrine, nutritional and metabolic diseases (E00-E89), within Disorders of thyroid gland (E00-E07) (E00–E07), under category E03, Other hypothyroidism.

What coding notes are listed for E03?

No inclusion terms are listed for E03 in this reference record. No code-first instruction is listed. Excludes1 notes: iodine-deficiency related hypothyroidism (E00-E02); postprocedural hypothyroidism (E89.0). No Excludes2 note is listed.

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