E03.9
✓ Billable
Hypothyroidism, unspecified
ICD-10-CM · FY2026 · Endocrine, Nutritional and Metabolic Diseases
Code
E03.9
System
ICD-10-CM
Billable
Yes — valid for submission
Effective
FY2026
Chapter
Endocrine, Nutritional and Metabolic Diseases
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Frequently asked questions
What is ICD-10 code E03.9?
ICD-10-CM code E03.9 represents Hypothyroidism, unspecified. It is a billable diagnosis code in the Endocrine, Nutritional and Metabolic Diseases chapter, effective October 1, 2025 – September 30, 2026.
Is E03.9 billable?
Yes. E03.9 is a valid billable ICD-10-CM code for insurance claims and clinical documentation.
What chapter is E03.9 in?
E03.9 belongs to the Endocrine, Nutritional and Metabolic Diseases chapter (E00–E89) of ICD-10-CM.
Related codes in the E03 category
E03
Other hypothyroidism
Non-billable
E03.0
Congenital hypothyroidism with diffuse goiter
Billable
E03.1
Congenital hypothyroidism without goiter
Billable
E03.2
Hypothyroidism due to medicaments and other exogenous substances
Billable
E03.3
Postinfectious hypothyroidism
Billable
E03.4
Atrophy of thyroid (acquired)
Billable
E03.5
Myxedema coma
Billable
E03.8
Other specified hypothyroidism
Billable
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