ICD-10-CM > S00-T88 > S90-S99 > S90 > S90.4 > S90.44 > S90.445 S90.445 External constriction, left lesser toe(s) Non-Billable/Non-Specific Codes S90.445A..., initial encounterS90.445D..., subsequent encounterS90.445S..., sequela