ICD-10-CM > S00-T88 > T36-T50 > T44 > T44.8 > T44.8X > T44.8X5 T44.8X5 Adverse effect of centrally-acting and adrenergic-neuron-blocking agents Non-Billable/Non-Specific Codes T44.8X5A..., initial encounterT44.8X5D..., subsequent encounterT44.8X5S..., sequela