ICD-10-CM > S00-T88 > T20-T25 > T25 > T25.4 T25.4 Corrosion of unspecified degree of ankle and foot Non-Billable/Non-Specific Code First (T51-T65) to identify chemical and intent Use Additional external cause code to identify place (Y92) Codes T25.41Corrosion of unspecified degree of ankleT25.411Corrosion of unspecified degree of right ankleT25.411A..., initial encounterT25.411D..., subsequent encounterT25.411S..., sequelaT25.412Corrosion of unspecified degree of left ankleT25.412A..., initial encounterT25.412D..., subsequent encounterT25.412S..., sequelaT25.419Corrosion of unspecified degree of unspecified ankleT25.419A..., initial encounterT25.419D..., subsequent encounterT25.419S..., sequelaT25.42Corrosion of unspecified degree of footT25.421Corrosion of unspecified degree of right footT25.421A..., initial encounterT25.421D..., subsequent encounterT25.421S..., sequelaT25.422Corrosion of unspecified degree of left footT25.422A..., initial encounterT25.422D..., subsequent encounterT25.422S..., sequelaT25.429Corrosion of unspecified degree of unspecified footT25.429A..., initial encounterT25.429D..., subsequent encounterT25.429S..., sequelaT25.43Corrosion of unspecified degree of toe(s) (nail)T25.431Corrosion of unspecified degree of right toe(s) (nail)T25.431A..., initial encounterT25.431D..., subsequent encounterT25.431S..., sequelaT25.432Corrosion of unspecified degree of left toe(s) (nail)T25.432A..., initial encounterT25.432D..., subsequent encounterT25.432S..., sequelaT25.439Corrosion of unspecified degree of unspecified toe(s) (nail)T25.439A..., initial encounterT25.439D..., subsequent encounterT25.439S..., sequelaT25.49Corrosion of unspecified degree of multiple sites of ankle and footT25.491Corrosion of unspecified degree of multiple sites of right ankle and footT25.491A..., initial encounterT25.491D..., subsequent encounterT25.491S..., sequelaT25.492Corrosion of unspecified degree of multiple sites of left ankle and footT25.492A..., initial encounterT25.492D..., subsequent encounterT25.492S..., sequelaT25.499Corrosion of unspecified degree of multiple sites of unspecified ankle and footT25.499A..., initial encounterT25.499D..., subsequent encounterT25.499S..., sequela