ICD-10-CM > S00-T88 > T51-T65 > T52 > T52.2 > T52.2X > T52.2X4 T52.2X4 Toxic effect of homologues of benzene, undetermined Non-Billable/Non-Specific Codes T52.2X4A..., initial encounterT52.2X4D..., subsequent encounterT52.2X4S..., sequela