Assault by knife, initial encounter

This code signifies an injury sustained as a direct result of an intentional physical attack involving a knife or other sharp, bladed instrument. It specifically indicates that this is the first time the patient is being treated for this particular assault. The injury could range from superficial cuts to deep stab wounds.

Apply this code when documenting the initial treatment for a patient who has been a victim of an assault where a knife was the weapon used. This includes emergency department visits, initial hospital admissions, or the first outpatient encounter for the acute injury. It is crucial to use this code only for the very first presentation of the injury.

• Always assign an external cause code (X99.1XXA) in conjunction with a code for the specific injury sustained (e.g., laceration, stab wound).
• Ensure the "A" seventh character for "initial encounter" is used only for the first time the patient is seen for this specific injury.
• Document the intent of the injury clearly in the medical record to support the use of an assault code.