Unsp injury of unsp innominate or subclavian artery, init

This code signifies an injury to either the innominate (brachiocephalic) or subclavian artery where the specific nature of the injury (e.g., laceration, contusion, dissection) is not documented. It also indicates that the side of the body (left or right) is unspecified. This code is used for the initial treatment of such an injury.

Use this code when a patient presents with an acute injury to the innominate or subclavian artery, but the medical record lacks detailed information regarding the type of arterial damage or its laterality. This is often applicable in emergency department settings or initial assessments where full diagnostic workup is pending or incomplete.

• Only use this code when the specific type of arterial injury (e.g., laceration, puncture, contusion) is truly unknown or undocumented.
• Avoid using this code if the laterality (left or right) of the injured artery is specified in the medical record.
• Ensure the "A" seventh character is appropriate for the initial encounter for treatment of the injury.