Patient presents with complaints consistent with a suspected Achilles tendon rupture.  Onset of injury occurred while [activity causing injury, e.g., playing basketball, jumping, falling] on [date of injury].  Patient describes a sudden, sharp pain in the posterior aspect of the ankle and lower leg, sometimes described as a "pop" or "snap."  Physical examination reveals [positive or negative] Thompson test,  [palpable or non-palpable] gap in the Achilles tendon,  and [presence or absence] of ecchymosis and edema around the affected area.  Decreased plantarflexion strength and difficulty with weight-bearing are noted.  Differential diagnosis includes Achilles tendinitis, partial Achilles tendon tear, ankle sprain, and calf muscle strain.  Preliminary diagnosis of Achilles tendon rupture is made based on clinical presentation and physical exam findings.  Plan includes [imaging studies ordered e.g., ultrasound, MRI] to confirm the diagnosis and assess the extent of the tear.  Treatment options including conservative management with bracing and immobilization versus surgical repair will be discussed with the patient after imaging results are reviewed.  Patient education provided regarding Achilles tendon rupture symptoms, diagnosis, treatment, and rehabilitation.  Follow-up appointment scheduled for [date of follow-up].  ICD-10 code S86.011A (complete rupture of right Achilles tendon) or S86.012A (complete rupture of left Achilles tendon) is considered, pending imaging confirmation.  Other relevant codes may include those for pain management, physical therapy, or surgical intervention as appropriate.