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I09.8

I09.8Other specified rheumatic heart diseases

Non-billable headerICD-10-CM

I09.8 is a non-billable header ICD-10-CM code for other specified rheumatic heart diseases. It cannot be billed on its own: choose one of the more specific child codes below.

Other codes that can never be billed with I09.8

These codes carry an Excludes1 note pointing at I09.8. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading I09.8 alone.

  • I37Nonrheumatic pulmonary valve disorders

Risk adjustment

I09.8 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 I09.8

2 child codes. Green means billable.

Related codes at this level

Codes that share I09. If I09.8 is not quite right, the correct code is usually one of these.

Questions about I09.8

Is I09.8 a billable ICD-10-CM code?
No. I09.8 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does I09.8 sit in the tabular list?
Diseases of the circulatory system (I00-I99), in the block Chronic rheumatic heart diseases (I05-I09).
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.