ICD-10-CM > S00-T88 > T51-T65 > T63 > T63.4 > T63.42 > T63.424 T63.424 Toxic effect of venom of ants, undetermined Non-Billable/Non-Specific Codes T63.424A..., initial encounterT63.424D..., subsequent encounterT63.424S..., sequela