ICD-10-CM > I00-I99 > I26-I28 > I27 > I27.8 > I27.81 I27.81 Cor pulmonale (chronic) Billable/Specific Copy Code Copy Description Applicable To Cor pulmonale NOS Code Also , if applicable, right heart failure (I50.81-) Type 1 Excludes acute cor pulmonale (I26.0-)