| T25.521 | Corrosion of first degree of right foot | NON-BILLABLE CODE |
| T25.521A | Corrosion of first degree of right foot, initial encounter | BILLABLE CODE |
| T25.521D | Corrosion of first degree of right foot, subsequent encounter | BILLABLE CODE |
| T25.521S | Corrosion of first degree of right foot, sequela | BILLABLE CODE |
| T25.522 | Corrosion of first degree of left foot | NON-BILLABLE CODE |
| T25.522A | Corrosion of first degree of left foot, initial encounter | BILLABLE CODE |
| T25.522D | Corrosion of first degree of left foot, subsequent encounter | BILLABLE CODE |
| T25.522S | Corrosion of first degree of left foot, sequela | BILLABLE CODE |
| T25.529 | Corrosion of first degree of unspecified foot | NON-BILLABLE CODE |
| T25.529A | Corrosion of first degree of unspecified foot, initial encounter | BILLABLE CODE |
| T25.529D | Corrosion of first degree of unspecified foot, subsequent encounter | BILLABLE CODE |
| T25.529S | Corrosion of first degree of unspecified foot, sequela | BILLABLE CODE |
