Patient presents with complaints of heel pain consistent with left plantar fasciitis.  The patient reports pain localized to the medial aspect of the left heel, worse in the morning upon first weight-bearing and after periods of rest.  The pain is described as sharp, stabbing, or aching, and improves with activity but may worsen with prolonged standing or walking.  The patient denies any history of trauma to the area.  Physical examination reveals tenderness to palpation along the medial calcaneal tubercle and plantar fascia.  Pain is elicited with passive dorsiflexion of the foot and toes.  Negative Tinel's sign at the ankle.  Gait analysis unremarkable other than antalgic gait favoring the left side.  Differential diagnoses considered include plantar heel spur, Achilles tendinopathy, nerve entrapment, and stress fracture.  Based on the patient's history, physical exam findings, and absence of other concerning symptoms, the diagnosis of left plantar fasciitis is made.  Treatment plan includes conservative management with rest, ice, NSAIDs for pain and inflammation, stretching exercises focused on the plantar fascia and Achilles tendon, orthotic support with arch support and heel cushioning, and patient education regarding activity modification.  Referral to physical therapy may be considered if symptoms do not improve with initial conservative treatment.  Patient advised to follow up in four to six weeks to assess response to treatment and discuss further management options if needed.  ICD-10 code M72.2 is assigned for left plantar fasciitis.