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ICD11

Diseases of the circulatory system (I00–I99)

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Diseases of the circulatory system is a chapter in ICD-11 that includes conditions affecting the heart, blood vessels, and lymphatic components responsible for transporting blood, oxygen, and nutrients throughout the body. These disorders may arise from congenital abnormalities, degenerative changes, infections, inflammatory processes, metabolic factors, or lifestyle-related risks, leading to impaired circulation and organ function.

This chapter covers a wide range of cardiovascular conditions such as ischemic heart disease, hypertension, heart failure, cerebrovascular disorders, and diseases of arteries, veins, and lymphatic vessels. Accurate classification supports effective diagnosis, risk assessment, treatment planning, and long-term management, while also contributing to public health surveillance, research, and strategies aimed at preventing and reducing cardiovascular disease globally.

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Frequently asked questions

This chapter includes disorders of the heart, blood vessels, and circulatory system.

It includes hypertension, ischemic heart disease, heart failure, arrhythmias, and cerebrovascular diseases.

Yes. Stroke and other cerebrovascular diseases are classified in this chapter.

Yes. Both congenital and acquired circulatory system disorders are included.

It aligns with modern cardiology standards and improves clarity of disease categories.

It supports cardiovascular care, outcomes monitoring, research, and health policy planning.

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