I39
✓ Billable
Endocarditis and heart valve disorders in diseases classified elsewhere
ICD-10-CM · FY2026 · Diseases of the Circulatory System
Code
I39
System
ICD-10-CM
Billable
Yes — valid for submission
Effective
FY2026
Chapter
Diseases of the Circulatory System
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.
Official coding notes
From CMS's ICD-10-CM Tabular List.
Excludes1 — never code together
- endocardial involvement in:
- candidiasis (B37.6)
- gonococcal infection (A54.83)
- Libman-Sacks disease (M32.11)
- listerosis (A32.82)
- meningococcal infection (A39.51)
- rheumatoid arthritis (M05.31)
- syphilis (A52.03)
- tuberculosis (A18.84)
- typhoid fever (A01.02)
Code first
- underlying disease, such as:
- Q fever (A78)
Frequently asked questions
What is ICD-10 code I39?
ICD-10-CM code I39 represents Endocarditis and heart valve disorders in diseases classified elsewhere. It is a billable diagnosis code in the Diseases of the Circulatory System chapter, effective October 1, 2025 – September 30, 2026.
Is I39 billable?
Yes. I39 is a valid billable ICD-10-CM code for insurance claims and clinical documentation.
What chapter is I39 in?
I39 belongs to the Diseases of the Circulatory System chapter (I00–I99) of ICD-10-CM.
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