ICD-10-CM > S00-T88 > T36-T50 > T47 > T47.4 > T47.4X > T47.4X6 T47.4X6 Underdosing of other laxatives Non-Billable/Non-Specific Codes T47.4X6A..., initial encounterT47.4X6D..., subsequent encounterT47.4X6S..., sequela