E03 is a non-billable/non-specific diagnosis code from the 2026 ICD-10-CM used to classify the following condition: Other hypothyroidism.
Iodine-deficiency related hypothyroidism (E00-E02)
Postprocedural hypothyroidism (E89.0)
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Congenital hypothyroidism with diffuse goiter
Congenital hypothyroidism without goiter
Hypothyroidism due to medicaments and other exogenous substances
Postinfectious hypothyroidism
Atrophy of thyroid (acquired)
Myxedema coma
Other specified hypothyroidism
Hypothyroidism, unspecified
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