ICD-10-CM > S00-T88 > S30-S39 > S31 > S31.0 S31.0 Open wound of lower back and pelvis Non-Billable/Non-Specific Codes S31.00Unspecified open wound of lower back and pelvisS31.000Unspecified open wound of lower back and pelvis without penetration into retroperitoneumS31.000A..., initial encounterS31.000D..., subsequent encounterS31.000S..., sequelaS31.001Unspecified open wound of lower back and pelvis with penetration into retroperitoneumS31.001A..., initial encounterS31.001D..., subsequent encounterS31.001S..., sequelaS31.01Laceration without foreign body of lower back and pelvisS31.010Laceration without foreign body of lower back and pelvis without penetration into retroperitoneumS31.010A..., initial encounterS31.010D..., subsequent encounterS31.010S..., sequelaS31.011Laceration without foreign body of lower back and pelvis with penetration into retroperitoneumS31.011A..., initial encounterS31.011D..., subsequent encounterS31.011S..., sequelaS31.02Laceration with foreign body of lower back and pelvisS31.020Laceration with foreign body of lower back and pelvis without penetration into retroperitoneumS31.020A..., initial encounterS31.020D..., subsequent encounterS31.020S..., sequelaS31.021Laceration with foreign body of lower back and pelvis with penetration into retroperitoneumS31.021A..., initial encounterS31.021D..., subsequent encounterS31.021S..., sequelaS31.03Puncture wound without foreign body of lower back and pelvisS31.030Puncture 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..., sequelaS31.04Puncture wound with foreign body of lower back and pelvisS31.040Puncture wound with foreign body of lower back and pelvis without penetration into retroperitoneumS31.040A..., initial encounterS31.040D..., subsequent encounterS31.040S..., sequelaS31.041Puncture wound with foreign body of lower back and pelvis with penetration into retroperitoneumS31.041A..., initial encounterS31.041D..., subsequent encounterS31.041S..., sequelaS31.05Open bite of lower back and pelvisS31.050Open bite of lower back and pelvis without penetration into retroperitoneumS31.050A..., initial encounterS31.050D..., subsequent encounterS31.050S..., sequelaS31.051Open bite of lower back and pelvis with penetration into retroperitoneumS31.051A..., initial encounterS31.051D..., subsequent encounterS31.051S..., sequela