This group comprises substances used for the treatment of cardiovascular conditions.
Drugs used for the treatment of hypertension are classified in C02 - Antihypertensives, C03 - Diuretics, C07 - Beta blocking agents, C08 - Calcium channel blockers, and C09 - Agents acting on the renin-angiotensin system. For the classification of combination products of antihypertensives from different ATC groups, the following ranking should be used, from higher to lower precedence: C09, C07, C08, and C03.

This group comprises various preparations used in the treatment of ischemic heart diseases, which cannot be classified in any of the preceding groups.

This group comprises e.g. alprostadil. Specific formulations of alprostadil for treatment of erectile dysfunction are classified in G04BE01.