Sprain of calcaneofibular ligament of left ankle, init

This code signifies a sprain, or stretching/tearing of the calcaneofibular ligament, located on the outside of the left ankle. This ligament connects the calcaneus (heel bone) to the fibula (outer lower leg bone) and is crucial for ankle stability. Injury typically results from an inversion mechanism, where the foot rolls inward.

Apply this code when documentation clearly indicates a sprain of the calcaneofibular ligament in the left ankle. This is appropriate for the initial treatment of such an injury, including emergency department visits, initial physician consultations, or the beginning of a treatment plan.

• Ensure laterality (left ankle) is explicitly documented.
• Confirm the specific ligament involved is the calcaneofibular, not other lateral ankle ligaments.
• The "A" suffix indicates an initial encounter for this specific injury, meaning the patient is receiving active treatment.