ICD-10-CM > S00-T88 > T36-T50 > T44 > T44.2 > T44.2X > T44.2X6 T44.2X6 Underdosing of ganglionic blocking drugs Non-Billable/Non-Specific Codes T44.2X6A..., initial encounterT44.2X6D..., subsequent encounterT44.2X6S..., sequela