E03.9Billable
Hypothyroidism, unspecified
- Chapter
- 4. Endocrine, nutritional and metabolic diseases
- Category
- E03
- Effective date
- October 1, 2026
Related codes in category E03
E03Other hypothyroidismE03.0Congenital hypothyroidism with diffuse goiterYesE03.1Congenital hypothyroidism without goiterYesE03.2Hypothyroidism due to meds and oth exogenous substancesYesE03.3Postinfectious hypothyroidismYesE03.4Atrophy of thyroid (acquired)YesE03.5Myxedema comaYesE03.8Other specified hypothyroidismYes
Frequently asked questions
What is ICD-10 code E03.9?
E03.9 is an ICD-10-CM diagnosis code for Hypothyroidism, unspecified.
Is E03.9 a billable code?
Yes. E03.9 is billable and specific enough to be used on a claim.
What ICD-10-CM chapter is E03.9 in?
E03.9 falls under Chapter 4: Endocrine, nutritional and metabolic diseases.
When did E03.9 become effective?
E03.9 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to E03.9?
E03.9 belongs to category E03, which includes 8 other codes — see the related codes list on this page.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.