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I08

I08Multiple valve diseases

Non-billable headerICD-10-CM

I08 is a non-billable header ICD-10-CM code for multiple 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.

  • endocarditis, valve unspecified (I38)
  • rheumatic valve disease NOS (I09.1)

Excludes2 — not included here, but may coexist

The excluded condition is not part of this code, but a patient can have both. You may code both.

Includes

Conditions this code covers.

  • multiple valve diseases specified as rheumatic or unspecified

Other codes that can never be billed with I08

These codes carry an Excludes1 note pointing at I08. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading I08 alone.

  • I05Rheumatic mitral valve diseases
  • I07Rheumatic tricuspid valve diseases
  • I34Nonrheumatic mitral valve disorders
  • I36Nonrheumatic tricuspid valve disorders

Risk adjustment

I08 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 I08

6 child codes. Green means billable.

Questions about I08

Is I08 a billable ICD-10-CM code?
No. I08 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does I08 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 I08?
I08 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.
ICD-10-CMFY2026-Apr· effective April 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release — see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.