Just in time for trick-or-treating mishaps, S81.032 identifies a puncture wound without foreign body of the left knee. Puncture injuries often present subtle clinical details, but proper ICD-10-CM assignment demands precise documentation regarding lateral location and the presence of embedded debris. Coders must ensure that any associated complications, such as soft tissue infection, are reported alongside the primary injury code. Selecting the correct 7th character is crucial to accurately convey whether this represents an initial encounter or subsequent care. Master these specific requirements to prevent billing delays and ensure clean claim submissions.