ICD-10-CM E03 is the diagnosis code for Other hypothyroidism. This code falls under the section "Disorders of thyroid gland" within Chapter 4 — Endocrine, nutritional and metabolic diseases (E00-E89). It is a non-billable/non-specific ICD-10-CM code that should not be used for reimbursement. A more specific sub-code is required for billing. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
The following conditions should never be coded at the same time as E03. They are mutually exclusive:
Understanding where E03 sits in the ICD-10-CM classification helps ensure proper coding:
No, E03 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.
E03 is the ICD-10-CM diagnosis code for "Other hypothyroidism". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
E03 is located in Section E00-E07 — "Disorders of thyroid gland" within Chapter 4 of the ICD-10-CM Tabular List.
E03 has 8 sub-code(s) that provide more specific detail: E03.0, E03.1, E03.2, E03.3, E03.4 and more.
Use E03 when the patients documented diagnosis matches "Other hypothyroidism" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Other hypothyroidism is E03.
No, E03 is non-billable. Use a more specific sub-code for primary diagnosis billing.
E03 is in Chapter 4 of the ICD-10-CM Tabular List.
Type 1 Excludes for E03 include: iodine-deficiency related hypothyroidism (E00-E02); postprocedural hypothyroidism (E89.0).
Yes, E03 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.