Injury of ulnar nerve at upper arm level, unsp arm, init

This code signifies damage to the ulnar nerve in the upper arm, affecting its function. Such an injury can result in sensory deficits (numbness, tingling) and/or motor weakness in the hand and forearm, specifically impacting muscles innervated by the ulnar nerve. The "unspecified arm" indicates that the laterality (left or right) of the injury is not documented.

This code is appropriate for initial encounters with a patient presenting with a newly diagnosed ulnar nerve injury in the upper arm, where the specific side of the body is not yet determined or documented. This could include cases of acute trauma, compression, or laceration affecting the nerve in this region. It is used when the physician has not specified whether the injury is to the left or right arm.

• Ensure documentation clearly states the injury is to the ulnar nerve and located in the upper arm.
• Only use this code for the initial encounter for treatment of the injury. Subsequent encounters will require a different seventh character.
• Avoid using this code if the laterality (left or right arm) is specified in the medical record; instead, select the more specific code.