I05.8 vs I34
I05.8 (Other rheumatic mitral valve diseases) compared with I34 (Nonrheumatic mitral valve disorders), 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. I05.8 carries an Excludes1 note covering I34: “mitral valve disease specified as nonrheumatic (I34.-)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
No — do not report together. I34 carries an Excludes1 note covering I05.8: “mitral valve failure (I05.8)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
No — do not report together. I34 carries an Excludes1 note covering I05.8: “mitral valve disorder specified as rheumatic (I05.-)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
Side by side
| I05.8Other rheumatic mitral valve diseases | I34Nonrheumatic mitral valve disorders | |
|---|---|---|
| Billing status | Billable | Non-billable header |
| Classification | I00-I99 — Diseases of the Circulatory System (I00-I99) | I00-I99 — Diseases of the Circulatory System (I00-I99) |
| Definition | Other rheumatic mitral valve diseases is a billable ICD-10-CM diagnosis code (I05.8). | Nonrheumatic mitral valve disorders is a non-billable ICD-10-CM category code (I34). |
| Includes | conditions classifiable to both I05.0 and I05.2-I05.9, whether specified as rheumatic or not Rheumatic mitral (valve) failure | — |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources