E03
⚠ Non-billable (Header)Other hypothyroidism
Endocrine, nutritional and metabolic diseases (E00-E89)
⚠️ This is a category header code — not billable. Use a more specific child code below.
❌ Excludes1
directCannot be coded with E03
- • iodine-deficiency related hypothyroidism (E00-E02)
- • postprocedural hypothyroidism (E89.0)
Child Codes (8)
E03.0Congenital hypothyroidism with diffuse goiterE03.1Congenital hypothyroidism without goiterE03.2Hypothyroidism due to medicaments and other exogenous substancesE03.3Postinfectious hypothyroidismE03.4Atrophy of thyroid (acquired)E03.5Myxedema comaE03.8Other specified hypothyroidismE03.9Hypothyroidism, unspecified
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CodeE03
BillableNo — Header code
CategoryEndocrine, nutritional and metabolic diseases (E00-E89)
Excludes12 rule(s)
Excludes20 note(s)
Child codes8
Data Source
CMS ICD-10-CM 2026 Tabular List
Updated October 1, 2025 (FY2026)