Pulmonary hypertension due to left heart disease

This code signifies elevated blood pressure within the pulmonary arteries that is a direct consequence of underlying left-sided heart conditions. It indicates a secondary form of pulmonary hypertension where the primary pathology originates from the left heart, leading to increased pressure in the pulmonary circulation.

Apply this code when documentation clearly links pulmonary hypertension to a specific left heart disease, such as left ventricular systolic or diastolic dysfunction, valvular heart disease (e.g., mitral stenosis, aortic stenosis), or left atrial disease. Supporting documentation should include diagnostic findings like echocardiogram reports showing elevated pulmonary artery pressures and evidence of left heart pathology.

• Always sequence the underlying left heart disease code first, as it is the etiology of the pulmonary hypertension.
• Ensure the physician's documentation explicitly states the causal relationship between the left heart disease and the pulmonary hypertension.
• Differentiate from other forms of pulmonary hypertension (e.g., idiopathic, due to lung disease) which have distinct ICD-10-CM codes.