ICD-10-CM > I00-I99 > I30-I5A > I31 > I31.3 I31.3 Pericardial effusion (noninflammatory) Non-Billable/Non-Specific Type 1 Excludes acute pericardial effusion (I30.9) Codes I31.31Malignant pericardial effusion in diseases classified elsewhereI31.39Other pericardial effusion (noninflammatory)