Other secondary pulmonary hypertension ICD-10-CMI27.29 https://icd10coded.com/cm/I27.29/ Includes: Group 5 pulmonary hypertension, Pulmonary hypertension with unclear multifactorial mechanisms, Pulmonary hypertension due to hematologic disorders, Pulmonary hypertension due to metabolic disorders, Pulmonary hypertension due to other systemic disorders