Skin and subcutaneous (L00-L99).
- Acute contact dermatitis (contact dermatitis; skin lesions caused by skin contact with certain substances).
Cardiovascular system (I00-I99).
- Chronic venous insufficiency (CVI) with stasis dermatitis and hypodermitis (inflammation of the subcutis).
- Phlebitis (inflammation of the veins)
- Deep vein thrombosis (TBVT)
Infectious and parasitic diseases (A00-B99).
- Erysipeloid (porcine erysipelas).
- Erythema chronicum migrans (first stage of Lyme disease).
- Phlegmon – diffusely spreading, purulent soft tissue infection.
Musculoskeletal system and connective tissue (M00-M99).
- Necrotizing fasciitis – foudroyant, bacterial soft tissue infection of the skin and subcutis involving the fascia, caused by Streptococcus pyogenes (GAS, group A streptococci).
Injuries, poisonings, and certain other consequences of external causes (S00-T98).
- Angioneurotic edema – swelling of the subcutis (submucosa) or submucosa (submucosal connective tissue) that usually affects the lips and eyelids but may also involve the tongue or other organs
- Insect bite (insect bite reaction).
