ICD-10-CM > S00-T88 > T36-T50 > T39 > T39.4 > T39.4X > T39.4X5 T39.4X5 Adverse effect of antirheumatics, not elsewhere classified Non-Billable/Non-Specific Codes T39.4X5A..., initial encounterT39.4X5D..., subsequent encounterT39.4X5S..., sequela