ICD-10-CM > S00-T88 > T36-T50 > T36 > T36.0 > T36.0X > T36.0X5 T36.0X5 Adverse effect of penicillins Non-Billable/Non-Specific Codes T36.0X5A..., initial encounterT36.0X5D..., subsequent encounterT36.0X5S..., sequela