In simple words: This code indicates high blood pressure in the lung arteries because of a problem with the left side of the heart, such as heart failure or valve disease.

Pulmonary hypertension due to left heart disease (Group 2 pulmonary hypertension) is a condition characterized by high blood pressure in the arteries of the lungs caused by a problem with the left side of the heart. This can be due to various conditions affecting the left side of the heart, including left heart failure, mitral valve disease, aortic valve disease, or other left heart structural or functional abnormalities.This code specifically indicates the presence of Group 2 pulmonary hypertension associated with known left heart disease.

Example 1: A 65-year-old patient with a history of mitral valve stenosis presents with shortness of breath and fatigue.Echocardiography and right heart catheterization confirm the diagnosis of pulmonary hypertension due to left heart disease., A 70-year-old patient with long-standing heart failure with reduced ejection fraction is found to have elevated pulmonary artery pressure on echocardiography. Further evaluation confirms the presence of pulmonary hypertension secondary to left heart failure., A 55-year-old patient with a history of rheumatic heart disease involving the aortic valve develops shortness of breath on exertion. After diagnostic tests, including right heart catheterization, they are diagnosed with pulmonary hypertension due to left heart disease stemming from aortic valve dysfunction.

Documentation should include details of the underlying left heart disease, including imaging studies (e.g., echocardiogram, cardiac MRI), right heart catheterization findings (mean pulmonary artery pressure, pulmonary capillary wedge pressure, pulmonary vascular resistance), and other relevant clinical findings supporting the diagnosis of pulmonary hypertension. The severity of both the left heart disease and the resulting pulmonary hypertension should also be documented.