ICD-10-CM > S00-T88 > T36-T50 > T47 > T47.5 > T47.5X > T47.5X6 T47.5X6 Underdosing of digestants Non-Billable/Non-Specific Codes T47.5X6A..., initial encounterT47.5X6D..., subsequent encounterT47.5X6S..., sequela