ICD-10-CM > S00-T88 > T36-T50 > T44 > T44.5 > T44.5X > T44.5X6 T44.5X6 Underdosing of predominantly beta-adrenoreceptor agonists Non-Billable/Non-Specific Codes T44.5X6A..., initial encounterT44.5X6D..., subsequent encounterT44.5X6S..., sequela