S31.03 - Puncture wound without foreign body of lower back and pelvis S31.0 - Open wound of lower back and pelvis S31.03 - Puncture wound without foreign body of lower back and pelvis S31.030 - Puncture wound without foreign body of lower back and pelvis without penetration into retroperitoneum S31.031 - Puncture wound without foreign body of lower back and pelvis with penetration into retroperitoneum