ICD-10-CM > S00-T88 > T36-T50 > T39 > T39.9 > T39.96 T39.96 Underdosing of unspecified nonopioid analgesic, antipyretic and antirheumatic Non-Billable/Non-Specific Codes T39.96XA..., initial encounterT39.96XD..., subsequent encounterT39.96XS..., sequela