Accurate use of ICD-10-CM codes for rheumatic heart disease helps you create correct medical records and receive full payment in cardiology billing.
Rheumatic heart disease (RHD) develops when acute rheumatic fever (ARF) damages the heart. This condition can permanently harm heart valves, especially the mitral and aortic valves.
The disease can appear in two ways:
- An active (acute) stage with inflammation
- A chronic stage with long-term valve damage
You must clearly understand these stages to choose the correct ICD-10 code.
In ICD-10-CM, doctors and coders divide rheumatic conditions into two main groups:
- Acute rheumatic fever codes (I00–I02)
- Chronic rheumatic heart disease codes (I05–I09)
Use acute codes when the patient has active inflammation. Use chronic codes when past rheumatic fever has caused long-term heart damage.
Many billing errors happen when coders mix up these two categories.
This guide explains all ICD-10 codes for rheumatic heart disease, including acute rheumatic fever, rheumatic chorea, and chronic valve diseases.
ICD-10-CM Codes for Acute Rheumatic Fever (I00–I02)
Use these codes only when the patient has active rheumatic inflammation. Do not use them for patients with chronic valve disease who do not have an active episode.
Rheumatic Fever Without Heart Involvement (I00)
Use this code when rheumatic fever affects the body but does not affect the heart.
- I00 – Rheumatic fever without heart involvement
Rheumatic Fever With Heart Involvement (I01)
Use these codes when acute rheumatic fever causes inflammation in the heart.
- I01 – Rheumatic fever with heart involvement (category)
- I01.0 – Acute rheumatic pericarditis
- I01.1 – Acute rheumatic endocarditis
- I01.2 – Acute rheumatic myocarditis
- I01.8 – Other acute rheumatic heart disease
Rheumatic Chorea (I02)
Rheumatic chorea, also called Sydenham’s chorea, causes involuntary movements and behavior changes.
- I02 – Rheumatic chorea
- I02.0 – Rheumatic chorea with heart involvement
- I02.9 – Rheumatic chorea without heart involvement
ICD-10-CM Codes for Chronic Rheumatic Heart Disease (I05–I09)
Use these codes when rheumatic fever has already caused permanent valve damage. You can use them even if the original infection happened years ago, as long as the doctor confirms a rheumatic cause.
Rheumatic Mitral Valve Diseases (I05)
These codes cover damage to the mitral valve, which doctors most commonly see in rheumatic heart disease.
- I05.0 – Rheumatic mitral stenosis
- I05.1 – Rheumatic mitral insufficiency (regurgitation)
- I05.2 – Mitral stenosis with insufficiency
- I05.8 – Other mitral valve diseases
- I05.9 – Unspecified mitral valve disease
Rheumatic Aortic Valve Diseases (I06)
These codes cover damage to the aortic valve, the second most commonly affected valve.
- I06.0 – Rheumatic aortic stenosis
- I06.1 – Rheumatic aortic insufficiency
- I06.2 – Aortic stenosis with insufficiency
- I06.8 – Other aortic valve diseases
- I06.9 – Unspecified aortic valve disease
Rheumatic Tricuspid Valve Diseases (I07)
Use these codes for tricuspid valve damage. This condition is rare and often occurs with mitral valve disease.
- I07.0 – Rheumatic tricuspid stenosis
- I07.1 – Rheumatic tricuspid insufficiency
- I07.2 – Tricuspid stenosis with insufficiency
- I07.8 – Other tricuspid valve diseases
- I07.9 – Unspecified tricuspid valve disease
Multiple Valve Diseases (I08)
Use these codes when more than one valve is affected. Do not code each valve separately in this case.
- I08.0 – Mitral and aortic valve disease
- I08.1 – Mitral and tricuspid valve disease
- I08.2 – Aortic and tricuspid valve disease
- I08.3 – Mitral, aortic, and tricuspid valve disease
- I08.8 – Other multiple valve diseases
- I08.9 – Unspecified multiple valve disease
Other Rheumatic Heart Diseases (I09)
Use these codes for other rheumatic heart conditions that do not fit into valve categories.
- I09.0 – Rheumatic myocarditis
- I09.1 – Rheumatic endocardial disease (unspecified valve)
- I09.2 – Chronic rheumatic pericarditis
- I09.81 – Rheumatic heart failure
- I09.89 – Other rheumatic heart diseases
- I09.9 – Unspecified rheumatic heart disease
Key Coding Tips for Rheumatic Heart Disease
Follow these simple tips to improve your coding accuracy:
1. Know the Difference Between Acute and Chronic
Use I00–I02 for active disease. Use I05–I09 for long-term damage.
2. Understand Mitral Valve Coding Rules
If mitral stenosis has no clear cause, you should treat it as rheumatic and code I05.0.
If mitral regurgitation has no rheumatic cause, you should code it as non-rheumatic (I34.0) unless the doctor confirms a rheumatic cause.
3. Use I08 for Multiple Valves
If more than one valve is affected, always use I08 codes instead of coding each valve separately.
4. Avoid Non-Billable Codes
Do not use general category codes like I05, I06, I07, I08, or I09. Always choose a more specific code to avoid claim rejection.
Conclusion
Correct use of ICD-10-CM codes for rheumatic heart disease ensures accurate documentation and smooth billing. You should clearly identify whether the condition is acute or chronic before selecting a code. Always use the most specific code and follow official coding rules, especially for valve involvement and multi-valve conditions.
Avoid common mistakes like using non-billable codes or mixing categories. By applying these simple practices, you can reduce claim denials, improve accuracy, and support better patient care in cardiology billing.
