ICD-10-CM > S00-T88 > T36-T50 > T44 > T44.4 > T44.4X > T44.4X6 T44.4X6 Underdosing of predominantly alpha-adrenoreceptor agonists Non-Billable/Non-Specific Codes T44.4X6A..., initial encounterT44.4X6D..., subsequent encounterT44.4X6S..., sequela