Is I05 a billable ICD-10-CM code?

No. I05 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does I05 sit in the tabular list?

Diseases of the circulatory system (I00-I99), in the block Chronic rheumatic heart diseases (I05-I09).

What cannot be coded together with I05?

I05 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.

I05

I05 — Rheumatic mitral valve diseases

Non-billable headerICD-10-CM

I05 is a non-billable header ICD-10-CM code for rheumatic mitral valve diseases. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes1 — never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

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

Includes

Conditions this code covers.

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

Other codes that can never be billed with I05

These codes carry an Excludes1 note pointing at I05. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading I05 alone.

I01Rheumatic fever with heart involvement
I34Nonrheumatic mitral valve disorders

Risk adjustment

I05 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Code to one of these instead I05

5 child codes. Green means billable.

Questions about I05

Is I05 a billable ICD-10-CM code?: No. I05 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does I05 sit in the tabular list?: Diseases of the circulatory system (I00-I99), in the block Chronic rheumatic heart diseases (I05-I09).
What cannot be coded together with I05?: I05 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.