Pnctr w/o fb of low back and pelv w penet retroperiton, init

This code describes a penetrating injury to the lower back or pelvis caused by a sharp object, which has gone deep enough to enter the retroperitoneal space. This means structures behind the abdominal lining, such as the kidneys, ureters, or major blood vessels, may be affected. There is no foreign object remaining in the wound.

This code is appropriate for initial encounters where a patient presents with a puncture wound to the lower back or pelvis, and diagnostic imaging or surgical exploration confirms penetration into the retroperitoneal cavity. Examples include stab wounds or impalement injuries where the depth of penetration is significant.

• Ensure documentation clearly specifies "without foreign body" and "penetration into retroperitoneum."
• Always confirm the encounter type (initial, subsequent, sequela) to select the correct seventh character.
• Look for associated injuries to retroperitoneal organs (e.g., kidney laceration) and code them separately.