Essential (primary) hypertension: I10. In ICD-9, essential hypertension was coded using 401.0 (malignant), 401.1 (benign), or 401.9 (unspecified). ICD-10 uses only a single code for individuals who meet criteria for hypertension and do not have comorbid heart or kidney disease.
Symptoms & Signs. Swelling of the lips can arise due to different conditions. Trauma or injury to the lip and mouth area is an obvious cause of swollen lips. Allergic reactions, either to foods, medications, or other substances, can often be accompanied by swelling of the lips. Angioedema is a condition in which there is swelling of the tissue beneath the skin, and this is often concentrated around the eyes and lips.
While aloe vera gel can be used by itself to treat swollen lips, you can make the remedy more potent by adding some tea tree essential oil to it. Tea tree oil is a strong antimicrobial agent, and it can help reduce swelling caused by infections and insect bites very quickly (12).