Inj ulnar artery at wrs/hnd lv of unsp arm, sequela

This code indicates a long-term complication or late effect resulting from a previous injury to the ulnar artery in the wrist or hand. This could include chronic pain, impaired circulation, nerve damage, or functional limitations that persist after the initial healing phase of an unspecified ulnar artery injury. The "unspecified arm" component means the laterality of the injury was not documented.

Use this code when a patient presents with a current condition or symptom that is a direct consequence of an old, resolved injury to the ulnar artery in the wrist or hand. This applies when the initial injury occurred on an arm that was not specified as left or right. Examples include chronic ischemia or neuropathy attributed to a past ulnar artery trauma.

• Always sequence this "S" code as a secondary diagnosis, following the code for the specific sequela (e.g., chronic pain, nonunion).
• Ensure documentation clearly links the current condition to a previous ulnar artery injury.
• If the laterality (left or right arm) is known, a more specific code should be used instead.