ICD-10-CM > S00-T88 > T36-T50 > T39 > T39.8 > T39.8X > T39.8X4 T39.8X4 Poisoning by other nonopioid analgesics and antipyretics, not elsewhere classified, undetermined Non-Billable/Non-Specific Codes T39.8X4A..., initial encounterT39.8X4D..., subsequent encounterT39.8X4S..., sequela