Patient presents with left foot cellulitis, characterized by localized erythema, edema, and tenderness to palpation.  Onset reported as three days prior to presentation, with progressive worsening of symptoms.  Patient reports pain, warmth, and swelling affecting the dorsal aspect of the left foot, extending from the midfoot to the toes.  No purulent drainage or fluctuance noted.  Denies fever, chills, or systemic symptoms.  Patient's medical history includes type 2 diabetes mellitus and peripheral neuropathy.  Current medications include metformin and gabapentin.  Physical examination reveals a well-demarcated area of erythema and induration on the left foot, with increased skin temperature.  Peripheral pulses are palpable, although slightly diminished in the left foot.  Capillary refill is less than 3 seconds.  No lymphadenopathy is appreciated.  Assessment: Left foot cellulitis, likely related to diabetic foot complications.  Differential diagnoses considered include deep vein thrombosis and contact dermatitis.  Plan:  Prescribed oral antibiotics, specifically cephalexin, for a course of 10 days.  Patient educated on wound care, including elevation and regular cleaning.  Emphasis placed on the importance of diabetic foot care and blood glucose control.  Follow-up appointment scheduled in one week to assess treatment response and monitor for potential complications such as abscess formation or spreading infection.  ICD-10 code L03.115, Cellulitis of left foot, assigned.  Patient instructed to return immediately if symptoms worsen or new symptoms develop.