Unsp opn wnd abd wall, left flank w/o penet perit cav, init

This code signifies an open injury to the left flank area of the abdominal wall that does not specify the type of open wound (e.g., laceration, puncture). Importantly, this injury has not breached the peritoneal cavity, meaning internal organs are not directly exposed or damaged through this wound. This is the initial encounter for this specific injury.

Use this code for a patient presenting with an uncharacterized open wound to the left flank, such as a superficial cut or abrasion, where documentation confirms no penetration into the abdominal cavity. This is appropriate for the initial assessment and treatment of such an injury in an emergency department or clinic setting.

• Ensure documentation explicitly states "left flank" and "without penetration into peritoneal cavity."
• If the type of open wound (e.g., laceration, puncture) is specified, a more specific code within the S31.1- series should be used.
• The "A" at the end indicates an initial encounter; subsequent care for this wound will require a different seventh character.