ICD-10-CM > S00-T88 > S90-S99 > S90 > S90.4 > S90.44 > S90.446 S90.446 External constriction, unspecified lesser toe(s) Non-Billable/Non-Specific Codes S90.446A..., initial encounterS90.446D..., subsequent encounterS90.446S..., sequela