I08 vs I38
I08 (Multiple valve diseases) compared with I38 (Endocarditis, valve unspecified), from the official CMS tabular data. Do not report these codes together: the official tabular list marks them Excludes1.
Can these codes be reported together?
No — do not report together. I08 carries an Excludes1 note covering I38: “endocarditis, valve unspecified (I38)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
Yes, when both are documented. I08 carries an Excludes2 note covering I38: “multiple valve disease specified as nonrheumatic (I34.-, I35.-, I36.-, I37.-, I38.-, Q22.-, Q23.-, Q24.8-)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Side by side
| I08Multiple valve diseases | I38Endocarditis, valve unspecified | |
|---|---|---|
| Billing status | Non-billable header | Billable |
| Classification | I00-I99 — Diseases of the Circulatory System (I00-I99) | I00-I99 — Diseases of the Circulatory System (I00-I99) |
| Definition | Multiple valve diseases is a non-billable ICD-10-CM category code (I08). | Endocarditis, valve unspecified is a billable ICD-10-CM diagnosis code (I38). |
| Includes | multiple valve diseases specified as rheumatic or unspecified | endocarditis (chronic) NOS valvular incompetence NOS valvular insufficiency NOS valvular regurgitation NOS |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources