| T23.401 | Corrosion of unspecified degree of right hand, unspecified site | NON-BILLABLE CODE |
| T23.401A | Corrosion of unspecified degree of right hand, unspecified site, initial encounter | BILLABLE CODE |
| T23.401D | Corrosion of unspecified degree of right hand, unspecified site, subsequent encounter | BILLABLE CODE |
| T23.401S | Corrosion of unspecified degree of right hand, unspecified site, sequela | BILLABLE CODE |
| T23.402 | Corrosion of unspecified degree of left hand, unspecified site | NON-BILLABLE CODE |
| T23.402A | Corrosion of unspecified degree of left hand, unspecified site, initial encounter | BILLABLE CODE |
| T23.402D | Corrosion of unspecified degree of left hand, unspecified site, subsequent encounter | BILLABLE CODE |
| T23.402S | Corrosion of unspecified degree of left hand, unspecified site, sequela | BILLABLE CODE |
| T23.409 | Corrosion of unspecified degree of unspecified hand, unspecified site | NON-BILLABLE CODE |
| T23.409A | Corrosion of unspecified degree of unspecified hand, unspecified site, initial encounter | BILLABLE CODE |
| T23.409D | Corrosion of unspecified degree of unspecified hand, unspecified site, subsequent encounter | BILLABLE CODE |
| T23.409S | Corrosion of unspecified degree of unspecified hand, unspecified site, sequela | BILLABLE CODE |
