I98: Other disorders of circulatory system in diseases classified elsewhere

The conditions denoted by the ICD-10 code range, I98, are classified as "Other disorders of the circulatory system in diseases classified elsewhere." These conditions occur when another primary disease or disorder leads to the development of additional problems within the circulatory system. For instance, complications from a lung disease may cause changes to the blood flow or pressure within the heart and blood vessels, resulting in additional circulatory disorders. Symptoms vary depending on the underlying condition but may include fatigue, shortness of breath, or chest discomfort. Progression of these disorders often correlates with the severity and treatment of the primary disease. As each condition affects the body's circulatory system — the network that delivers blood throughout the body — serious consequences to overall health can occur if not appropriately addressed.