E03.9 ICD-10-CM Code: Hypothyroidism, unspecified
E03.9 is the billable ICD-10-CM code for “Hypothyroidism, unspecified” in the FY 2027 U.S. code set, effective Oct 1, 2026.
Official description
E03.9Hypothyroidism, unspecified
ICD-10-CM diagnosis code · United States clinical modification
More specific than E03.9
View categoryE03.9 is an unspecified code, for when the note doesn’t say more. If it documents the type, cause, or site, one of these codes may fit better.
Where E03.9 sits
- 1
Chapter 4
Endocrine, nutritional and metabolic diseases (E00-E89)
- 2
Section
Disorders of thyroid gland (E00-E07)
- 3
Category E03
Other hypothyroidism
- 4
Code E03.9
Hypothyroidism, unspecified
Notes for this code
Inclusion terms
- Myxedema NOS
Code first
No “code first” instruction is listed for E03.9.
Use additional code
No “use additional code” instruction is listed for E03.9.
Excludes1
Conditions that should not be reported together with this code.
No Excludes1 note is listed for E03.9.
Excludes2
Conditions not included here that may be reported separately when present.
No Excludes2 note is listed for E03.9.
Source and release
- Data release
- U.S. ICD-10-CM · FY 2027
- Effective date
- Oct 1, 2026
- Publisher
- Vero Scribe Inc.
This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.
Frequently asked questions
What does ICD-10-CM code E03.9 mean?
E03.9 is the FY 2027 U.S. ICD-10-CM code for “Hypothyroidism, unspecified.”
Is E03.9 a billable or specific ICD-10-CM code?
Yes. In the FY 2027 reference data used on this page, E03.9 has no child codes and is presented as a billable/specific code. Always confirm the active code set and payer requirements before use.
Where is E03.9 located in ICD-10-CM?
E03.9 is listed in Chapter 4, Endocrine, nutritional and metabolic diseases (E00-E89), within Disorders of thyroid gland (E00-E07) (E00–E07), under category E03, Other hypothyroidism.
What coding notes are listed for E03.9?
Its listed inclusion terms are Myxedema NOS. No code-first instruction is listed. No Excludes1 note is listed. No Excludes2 note is listed.