ICD-10-CM > S00-T88 > S90-S99 > S90 > S90.5 > S90.55 S90.55 Superficial foreign body of ankle Non-Billable/Non-Specific Applicable To Splinter in the ankle Codes S90.551Superficial foreign body, right ankleS90.551A..., initial encounterS90.551D..., subsequent encounterS90.551S..., sequelaS90.552Superficial foreign body, left ankleS90.552A..., initial encounterS90.552D..., subsequent encounterS90.552S..., sequelaS90.559Superficial foreign body, unspecified ankleS90.559A..., initial encounterS90.559D..., subsequent encounterS90.559S..., sequela