2025 ICD-10-CM Diagnosis Code I27.21
Secondary pulmonary arterial hypertension Applicable To Code Also The following code(s) above I27.21 contain annotation back-references that may be applicable to I27.21: ICD-10-CM I27.21 is grouped within Diagnostic Related Group(s) (MS-DRG v42.0): Convert I27.21 to ICD-9-CMCode History Code annotations containing back-references to I27.21: Diagnosis Index entries containing back-references to I27.21: