Contact with knife, undetermined intent, subs encntr

This code signifies an injury resulting from contact with a knife where the intent (accidental, self-harm, or assault) cannot be determined by the healthcare provider. This specific code is used for follow-up care after the initial treatment of the injury.

Apply this code for subsequent encounters when a patient presents for ongoing management of a knife wound, such as wound checks, dressing changes, or physical therapy, and the circumstances surrounding the injury remain unclear regarding intent. This is appropriate when the initial encounter code for the injury also indicated undetermined intent.

• Ensure documentation clearly states "undetermined intent" for the knife contact.
• Verify this is a subsequent encounter, not the initial treatment for the injury.
• Always code the specific nature of the knife injury (e.g., laceration, puncture wound) first, followed by this external cause code.