- Pulmonary I27.20

-- With

--- Cor Pulmonale I27.29

---- Acute I26.09

--- Right Heart Ventricular Strain/failure I27.29

---- Acute I26.09

--- Right To Left Shunt Related To Congenital Heart Disease I27.83

--- Unclear Multifactorial Mechanisms I27.29

-- Arterial I27.21

-- Chronic Thromboembolic I27.24

-- Due To

--- Hematologic Disorders I27.29

--- Left Heart Disease I27.22

--- Lung Diseases And Hypoxia I27.23

--- Metabolic Disorders I27.29

--- Specified Systemic Disorders NEC I27.29

-- Group 1 I27.21

-- Group 2 I27.22

-- Group 3 I27.23

-- Group 4 I27.24

-- Group 5 I27.29

-- Of Newborn P29.30

-- Primary I27.0

-- Secondary

--- Arterial I27.21

--- Specified NEC I27.29