Contact with knife, subsequent encounter

This code indicates that a patient is presenting for follow-up care or treatment of an injury that was initially caused by contact with a knife. This could include complications, healing assessments, or further interventions related to the original incident.

Apply this code when a patient returns for subsequent medical attention after an initial injury involving a knife. Examples include wound checks, dressing changes, physical therapy for a knife-related injury, or management of infection stemming from the original incident.

• Always pair this external cause code with an injury code (e.g., laceration, puncture wound) from categories S00-T88.
• Ensure the encounter is truly "subsequent" and not the initial treatment for the injury.
• Verify documentation clearly links the current visit to the original knife contact.