I09.1
BillableRheumatic diseases of endocardium, valve unspecified
I09.1 is the ICD-10-CM code for Rheumatic diseases of endocardium, valve unspecified. It is a billable, specific code valid for reimbursement.
I00-I99 Diseases of the circulatory system
What this means — in plain language
MedlinePlus · NIHWhat is heart disease? Heart disease is a general term that includes many types of heart problems. It's a type of cardiovascular disease, which means heart and blood vessel disease. Heart disease is the leading cause of death in the United States, but there are ways to prevent and manage many types of heart disease. What are the types of heart disease? There are many different types of heart disease. Some you may be…
Read more about Heart Diseases at MedlinePlus ↗Source: U.S. National Library of Medicine (MedlinePlus). Informational only — not medical advice.
Includes
- •Rheumatic endocarditis (chronic)
- •Rheumatic valvulitis (chronic)
Excludes1 — not coded here
- •endocarditis, valve unspecified (I38)
Medications indicated for this condition
FDA labelingDrugs whose FDA labeling lists this condition's category among its indications. Informational only — not a treatment recommendation or medical advice.
Conditions mapped to this code
MedlinePlus · NIHPlain-language health-topic references grounded in MedlinePlus (NIH/NLM).
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". It falls under I00-I99 Diseases of the circulatory system.
- Is I09.1 a billable code?
- Yes — I09.1 is a billable, specific ICD-10-CM code valid for reimbursement.
- What is excluded from I09.1?
- Excludes1 (not coded here): endocarditis, valve unspecified (I38).
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
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