ICD-10-CM > S00-T88 > T36-T50 > T41 > T41.2 > T41.20 > T41.206 T41.206 Underdosing of unspecified general anesthetics Non-Billable/Non-Specific Codes T41.206A..., initial encounterT41.206D..., subsequent encounterT41.206S..., sequela