I01.0 vs I30
I01.0 (Acute rheumatic pericarditis) compared with I30 (Acute pericarditis), 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. I01.0 carries an Excludes1 note covering I30: “acute pericarditis not specified as rheumatic (I30.-)”
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. I30 carries an Excludes1 note covering I01.0: “rheumatic pericarditis (acute) (I01.0)”
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
| I01.0Acute rheumatic pericarditis | I30Acute pericarditis | |
|---|---|---|
| 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 | Acute rheumatic pericarditis is a billable ICD-10-CM diagnosis code (I01.0). | Acute pericarditis is a non-billable ICD-10-CM category code (I30). |
| Includes | Any condition in I00 with pericarditis Rheumatic pericarditis (acute) | acute mediastinopericarditis acute myopericarditis acute pericardial effusion acute pleuropericarditis |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources