ICD-10-CM > S00-T88 > T51-T65 > T53 > T53.6 > T53.6X > T53.6X4 T53.6X4 Toxic effect of other halogen derivatives of aliphatic hydrocarbons, undetermined Non-Billable/Non-Specific Codes T53.6X4A..., initial encounterT53.6X4D..., subsequent encounterT53.6X4S..., sequela