ICD-10-CM · E00–E89Billable

ICD-10-CM Code E03.4

Atrophy of thyroid (acquired)

Source: CMS ICD-10-CM FY2026Effective Reviewed by the D3rx Clinical Billing Team

Diagnosis information

Billable

Yes

Valid for claim submission

Chapter

E00–E89

Endocrine, nutritional and metabolic diseases

Risk adjustment

None

Not risk-adjustable (V28)

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More codes in the E03 category

Other billable ICD-10-CM codes in the same category as E03.4. Coding to the highest specificity the documentation supports is what keeps a claim clean — pick the child code that most precisely matches the diagnosis.

  • E03.0Congenital hypothyroidism with diffuse goiter
  • E03.1Congenital hypothyroidism without goiter
  • E03.2Hypothyroidism due to medicaments and other exogenous substances
  • E03.3Postinfectious hypothyroidism
  • E03.5Myxedema coma
  • E03.8Other specified hypothyroidism
  • E03.9Hypothyroidism, unspecified

Documentation & coding notes

  • E03.4 is a billable/specific ICD-10-CM code — it can be reported as a primary or secondary diagnosis when the documentation supports it. Code to the highest level of specificity the record allows.
  • Always verify the code against the current ICD-10-CM Official Guidelines and the payer's coverage policy before submitting — coverage, medical necessity edits, and sequencing rules vary by payer.

Related E00–E89 codes

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Medical coding disclaimer

ICD-10-CM codes and descriptions shown are from the CMS FY2026 official code set and HCC mappings from the CMS-HCC V28 model (payment year 2026), shown for educational reference. Official Guidelines, payer coverage, medical-necessity edits, and sequencing rules vary. Always verify with the current ICD-10-CM Official Guidelines and the payer before submitting claims. D3rx is not responsible for coding or billing outcomes.