ICD-10-CM > S00-T88 > S30-S39 > S31 > S31.0 > S31.00 > S31.000 > S31.000S S31.000S Unspecified open wound of lower back and pelvis without penetration into retroperitoneum, sequela Billable/Specific Copy Code Copy Description Applicable To Unspecified open wound of lower back and pelvis NOS