Index to Diseases entry: Hypothyroidism(acquired)
Each row is a subterm under the entry. Indented rows refine the row above; “see” sends you to another entry. Look the code up in the tabular list before reporting it: the tabular notes can require a more specific or an additional code.
| Documentation | Code | Code description or cross-reference |
|---|---|---|
| autoimmune | — | see Thyroiditis, autoimmune |
| congenital(without goiter) | E03.1 | Congenital hypothyroidism without goiter |
| with goiter(diffuse) | E03.0 | Congenital hypothyroidism with diffuse goiter |
| due to | — | |
| exogenous substance NEC | E03.2 | Hypothyroidism due to medicaments and other exogenous substances |
| iodine-deficiency, acquired | E01.8 | Other iodine-deficiency related thyroid disorders and allied conditions |
| irradiation therapy | E89.0 | Postprocedural hypothyroidism |
| medicament NEC | E03.2 | Hypothyroidism due to medicaments and other exogenous substances |
| P-aminosalicylic acid(PAS) | E03.2 | Hypothyroidism due to medicaments and other exogenous substances |
| phenylbutazone | E03.2 | Hypothyroidism due to medicaments and other exogenous substances |
| resorcinol | E03.2 | Hypothyroidism due to medicaments and other exogenous substances |
| sulfonamide | E03.2 | Hypothyroidism due to medicaments and other exogenous substances |
| surgery | E89.0 | Postprocedural hypothyroidism |
| thiourea group drugs | E03.2 | Hypothyroidism due to medicaments and other exogenous substances |
| iatrogenic NEC | E03.2 | Hypothyroidism due to medicaments and other exogenous substances |
| iodine-deficiency(acquired) | E01.8 | Other iodine-deficiency related thyroid disorders and allied conditions |
| congenital | — | see Syndrome, iodine- deficiency, congenital |
| subclinical | E02 | Subclinical iodine-deficiency hypothyroidism |
| neonatal, transitory | P72.2 | Other transitory neonatal disorders of thyroid function, not elsewhere classified |
| postinfectious | E03.3 | Postinfectious hypothyroidism |
| postirradiation | E89.0 | Postprocedural hypothyroidism |
| postprocedural | E89.0 | Postprocedural hypothyroidism |
| postsurgical | E89.0 | Postprocedural hypothyroidism |
| specified NEC | E03.8 | Other specified hypothyroidism |
| subclinical, iodine-deficiency related | E02 | Subclinical iodine-deficiency hypothyroidism |
Tabular list notes for E03.9
- Inclusion terms
- Myxedema NOS
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Frequently asked questions
What is the ICD-10 code for hypothyroidism?
E03.9 (Hypothyroidism, unspecified) is the code the index assigns to "Hypothyroidism(acquired)" with no further detail. Confirm it in the tabular list before reporting it, because the tabular notes can require a different or additional code.
Which documentation changes the code for hypothyroidism?
The index lists 22 subterms with their own codes, including congenital(without goiter) (E03.1); congenital(without goiter) with goiter(diffuse) (E03.0); due to exogenous substance NEC (E03.2); due to iodine-deficiency, acquired (E01.8); due to irradiation therapy (E89.0).
Sources
Every figure on this page is taken from the CMS publications below, as released by the Centers for Medicare & Medicaid Services. Projection built 2026-10-10. Verify against the primary file before billing or contracting decisions. The reference methodology explains how each figure is computed from these files.
- ICD-10-CM FY2027 tabular order file (category titles)Version FY2027 · effective 2026-10-01 · file icd10cm_order_2027.txtSHA-256 38981fb2c1226e2b…
- ICD-10-CM FY2027 tabular list (chapter titles and ranges)Version FY2027 · effective 2026-10-01 · file 2027-code-tables-tabular-index.zipSHA-256 37baa476323714be…
- ICD-10-CM FY2027 code descriptions addenda (codes added, deleted and revised)Version FY2027 · effective 2026-10-01 · file icd10cm_codes_addenda_2027.txtSHA-256 cfba025073235af4…
Disclaimer
The entry, subterms and codes are reproduced from the FY2027 ICD-10-CM index; code descriptions are from the FY2027 code files. Code from the medical record using both the index and the tabular list, under the ICD-10-CM Official Guidelines. Not legal, clinical or billing advice.
Found a figure that does not match the CMS file? Report a data correction with the CMS file and the value you expected; the request reaches the editorial team through the contact form.