Contact with knife, undetermined intent, initial encounter

This code signifies an injury resulting from contact with a knife where the intent behind the incident (e.g., accidental, self-harm, assault) cannot be determined by the healthcare provider. It indicates that the patient is presenting for the initial treatment of this specific injury.

Use this code when documentation clearly states an injury from a knife, but the medical record lacks sufficient information to classify the intent as accidental, intentional self-harm, or assault. This is common in situations where the patient is unable to provide a clear history, or the circumstances are ambiguous.

• Ensure documentation explicitly states "undetermined intent" or provides insufficient detail to assign a more specific intent code.
• Always assign an external cause code (Y28.1XXA) in conjunction with the primary injury code (e.g., laceration, stab wound).
• Do not use this code if the intent (e.g., accidental, assault) is clearly documented, even if the patient's account is vague.