ICD-10-CM > S00-T88 > T36-T50 > T50 > T50.2 > T50.2X > T50.2X6 T50.2X6 Underdosing of carbonic-anhydrase inhibitors, benzothiadiazides and other diuretics Non-Billable/Non-Specific Codes T50.2X6A..., initial encounterT50.2X6D..., subsequent encounterT50.2X6S..., sequela