ICD-10-CM > S00-T88 > T36-T50 > T50 > T50.A > T50.A9 > T50.A91 T50.A91 Poisoning by other bacterial vaccines, accidental (unintentional) Non-Billable/Non-Specific Codes T50.A91A..., initial encounterT50.A91D..., subsequent encounterT50.A91S..., sequela