ICD-10-CM > S00-T88 > S30-S39 > S34 > S34.1 > S34.12 > S34.121 S34.121 Incomplete lesion of L1 level of lumbar spinal cord Non-Billable/Non-Specific Applicable To Incomplete lesion of lumbar spinal cord level 1 Codes S34.121A..., initial encounterS34.121D..., subsequent encounterS34.121S..., sequela