Patient presents with lip swelling (edema of lip, swollen lip, lip enlargement).  Onset of swelling was [Onset - e.g., acute, gradual, 2 days ago].  Patient describes the swelling as [Descriptor - e.g., painful, painless, itchy, burning, tingling].  Location of swelling is noted as [Location - e.g., upper lip, lower lip, both lips, diffuse, localized].  Associated symptoms include [Associated Symptoms - e.g.,  urticaria, angioedema, difficulty breathing, dysphagia, rash, itching elsewhere on the body, fever, lip discoloration, lip numbness].  Patient denies [Pertinent Negatives - e.g.,  trauma, recent insect bites or stings, known allergies, new medications, changes in cosmetics, facial pain, difficulty speaking].  Physical examination reveals [Objective Findings - e.g.,  erythema, warmth, tenderness to palpation, lip cracking,  visible lesions, oropharyngeal edema].  The lip swelling is [Severity - e.g., mild, moderate, severe].  Differential diagnosis includes [Differential Diagnosis - e.g., allergic reaction, angioedema, cheilitis, infection, trauma, Melkersson-Rosenthal syndrome].  Assessment:  Lip swelling likely secondary to [Presumptive Diagnosis - e.g., allergic reaction vs. angioedema].  Plan:  [Treatment Plan - e.g.,  Administered diphenhydramine 25mg IV.  Prescribed prednisone 40mg PO daily for 5 days.  Patient advised to avoid potential allergens.  Patient educated on signs and symptoms of worsening angioedema and instructed to return to the ED if symptoms worsen or do not improve within 48 hours.  Follow up with primary care physician recommended].  ICD-10 code: [ICD-10 Code - e.g.,  L02.89, R22.0, T78.3XXA, etc. - depending on etiology].