Unsp injury of inferior mesenteric artery, init encntr

This diagnosis code indicates an injury to the inferior mesenteric artery (IMA) where the specific type of injury (e.g., laceration, contusion, rupture) is not documented. The IMA is a major abdominal artery supplying blood to the distal colon and rectum. This code is for the initial phase of treatment for such an injury.

This code is appropriate for cases of trauma to the abdomen where imaging or surgical exploration reveals damage to the inferior mesenteric artery, but the precise nature of the damage is not specified in the medical record. It is used when the patient is receiving active treatment for the injury.

• Only use this code when the specific type of IMA injury is truly unknown or unrecorded.
• Ensure documentation supports an "initial encounter" for active treatment of the injury.
• If the specific injury (e.g., laceration, puncture) is known, a more specific code from the S35.23- series should be used.