ICD-10-CM > S00-T88 > S30-S39 > S31 > S31.0 > S31.03 S31.03 Puncture wound without foreign body of lower back and pelvis Non-Billable/Non-Specific Codes S31.030Puncture wound without foreign body of lower back and pelvis without penetration into retroperitoneumS31.030A..., initial encounterS31.030D..., subsequent encounterS31.030S..., sequelaS31.031Puncture wound without foreign body of lower back and pelvis with penetration into retroperitoneumS31.031A..., initial encounterS31.031D..., subsequent encounterS31.031S..., sequela