Is I37 a billable ICD-10-CM code?

No. I37 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does I37 sit in the tabular list?

Diseases of the circulatory system (I00-I99), in the block Other forms of heart disease (I30-I5A).

What cannot be coded together with I37?

I37 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.

I37

I37 — Nonrheumatic pulmonary valve disorders

Non-billable headerICD-10-CM

I37 is a non-billable header ICD-10-CM code for nonrheumatic pulmonary valve disorders. 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.

pulmonary valve disorder specified as congenital (Q22.1, Q22.2, Q22.3)
pulmonary valve disorder specified as rheumatic (I09.89)

Risk adjustment

I37 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 I37

5 child codes. Green means billable.

Questions about I37

Is I37 a billable ICD-10-CM code?: No. I37 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does I37 sit in the tabular list?: Diseases of the circulatory system (I00-I99), in the block Other forms of heart disease (I30-I5A).
What cannot be coded together with I37?: I37 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.