Patient presents with signs and symptoms consistent with gangrene.  The affected area, documented as [location of gangrene, e.g., right foot, left toe, etc.], exhibits [describe visual characteristics, e.g., dry, black eschar; moist, foul-smelling necrotic tissue; discoloration ranging from dark red to purple to black].  Palpation reveals [describe tactile findings, e.g., cool to the touch, diminished or absent pulses, induration].  Patient reports [describe patient's subjective experience, e.g., pain, numbness, paresthesia, fever, chills].  The following diagnostic tests were performed: [list tests and results, e.g., arterial Doppler ultrasound showing reduced blood flow, wound culture revealing bacterial growth, blood tests indicating elevated white blood cell count].  Differential diagnosis includes critical limb ischemia, diabetic foot ulcer, and necrotizing fasciitis.  Based on the clinical presentation and diagnostic findings, the diagnosis of [type of gangrene, e.g., dry gangrene, wet gangrene, gas gangrene] is established.  Treatment plan includes [outline treatment strategy, e.g., surgical debridement, amputation, antibiotic therapy, wound care, pain management].  Patient education provided on wound care, medication management, and signs and symptoms of infection.  Follow-up appointment scheduled for [date] to monitor wound healing and assess treatment response.  ICD-10 code [relevant ICD-10 code] is assigned.  CPT codes for procedures performed will be documented separately.  Medical necessity for all procedures and treatments is clearly documented.