I09.1 – Rheumatic diseases of endocardium, valve unspecified
ICD-10-CM 2027 diagnosis code · Chronic rheumatic heart diseases
ICD-10-CM code
I09.1
- Code
I09.1(claims format:I091)- Description
- Rheumatic diseases of endocardium, valve unspecified
- Billable
- Yes – valid for HIPAA-covered transactions
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 9. Diseases of the circulatory system (I00-I99)
- Block
- I05-I09 Chronic rheumatic heart diseases
- Parent codes
- I09
Notes for I09.1
Applicable to:
- Rheumatic endocarditis (chronic)
- Rheumatic valvulitis (chronic)
Excludes1 (not coded here):
- endocarditis, valve unspecified (I38)
Index terms for I09.1
Entries in the ICD-10-CM alphabetic index that lead to this code:
Related codes in I09
Frequently asked questions
What is ICD-10 code I09.1?
I09.1 is the ICD-10-CM code for rheumatic diseases of endocardium, valve unspecified, in the block I05-I09 (Chronic rheumatic heart diseases).
Is I09.1 a billable code?
Yes. I09.1 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.
What category does I09.1 belong to?
It belongs to category I09 – Other rheumatic heart diseases.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.