E03 – Other hypothyroidism
ICD-10-CM 2027 diagnosis code · Disorders of thyroid gland
ICD-10-CM code
E03
- Code
E03(claims format:E03)- Description
- Other hypothyroidism
- Billable
- No – use a more specific code below
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 4. Endocrine, nutritional and metabolic diseases (E00-E89)
- Block
- E00-E07 Disorders of thyroid gland
Billable codes under E03
E03 is a header code and cannot be used on claims. Choose the most specific code:
- E03.0 – Congenital hypothyroidism with diffuse goiterBillable
- E03.1 – Congenital hypothyroidism without goiterBillable
- E03.2 – Hypothyroidism due to medicaments and other exogenous substancesBillable
- E03.3 – Postinfectious hypothyroidismBillable
- E03.4 – Atrophy of thyroid (acquired)Billable
- E03.5 – Myxedema comaBillable
- E03.8 – Other specified hypothyroidismBillable
- E03.9 – Hypothyroidism, unspecifiedBillable
Notes for E03
Frequently asked questions
What is ICD-10 code E03?
E03 is the ICD-10-CM code for other hypothyroidism, in the block E00-E07 (Disorders of thyroid gland).
Is E03 a billable code?
No. E03 is a header code with more specific child codes; report one of the billable codes listed above.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.