ICD-10-CM > S00-T88 > T36-T50 > T48 > T48.5 > T48.5X > T48.5X6 T48.5X6 Underdosing of other anti-common-cold drugs Non-Billable/Non-Specific Codes T48.5X6A..., initial encounterT48.5X6D..., subsequent encounterT48.5X6S..., sequela