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Compare/I09 vs I51

I09 vs I51

I09 (Other rheumatic heart diseases) compared with I51 (Complications and ill-defined descriptions of heart disease), from the official CMS tabular data. Both may be reported when both conditions are documented (Excludes2).

Can these codes be reported together?

Yes, when both are documented. I51 carries an Excludes2 note covering I09: “heart disease specified as rheumatic (I00-I09)”

Excludes2 marks distinct conditions — both may be reported when both are documented.

Side by side

I09Other rheumatic heart diseasesI51Complications and ill-defined descriptions of heart disease
Billing statusNon-billable header

Report instead: I09.0, I09.1, I09.2, I09.81, I09.89

Non-billable header

Report instead: I51.0, I51.1, I51.2, I51.3, I51.4

ClassificationI00-I99 — Diseases of the Circulatory System (I00-I99)I00-I99 — Diseases of the Circulatory System (I00-I99)
DefinitionOther rheumatic heart diseases is a non-billable ICD-10-CM category code (I09).Complications and ill-defined descriptions of heart disease is a non-billable ICD-10-CM category code (I51).
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Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources