NPI Atlas

I05 – Rheumatic mitral valve diseases

ICD-10-CM 2027 diagnosis code · Chronic rheumatic heart diseases

Non-billable header

ICD-10-CM code I05

Code: I05 (claims format: I05)
Description: Rheumatic mitral valve diseases
Billable: No – use a more specific code below
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

Billable codes under I05

I05 is a header code and cannot be used on claims. Choose the most specific code:

I05.0 – Rheumatic mitral stenosisBillable
I05.1 – Rheumatic mitral insufficiencyBillable
I05.2 – Rheumatic mitral stenosis with insufficiencyBillable
I05.8 – Other rheumatic mitral valve diseasesBillable
I05.9 – Rheumatic mitral valve disease, unspecifiedBillable

Notes for I05

Includes:

conditions classifiable to both I05.0 and I05.2-I05.9, whether specified as rheumatic or not

Excludes1 (not coded here):

mitral valve disease specified as nonrheumatic (I34.-)
mitral valve disease with aortic and/or tricuspid valve involvement (I08.-)

Frequently asked questions

What is ICD-10 code I05?

I05 is the ICD-10-CM code for rheumatic mitral valve diseases, in the block I05-I09 (Chronic rheumatic heart diseases).

Is I05 a billable code?

No. I05 is a header code with more specific child codes; report one of the billable codes listed above.

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.