| S90.841 | External constriction, right foot | NON-BILLABLE CODE |
| S90.841A | External constriction, right foot, initial encounter | BILLABLE CODE |
| S90.841D | External constriction, right foot, subsequent encounter | BILLABLE CODE |
| S90.841S | External constriction, right foot, sequela | BILLABLE CODE |
| S90.842 | External constriction, left foot | NON-BILLABLE CODE |
| S90.842A | External constriction, left foot, initial encounter | BILLABLE CODE |
| S90.842D | External constriction, left foot, subsequent encounter | BILLABLE CODE |
| S90.842S | External constriction, left foot, sequela | BILLABLE CODE |
| S90.849 | External constriction, unspecified foot | NON-BILLABLE CODE |
| S90.849A | External constriction, unspecified foot, initial encounter | BILLABLE CODE |
| S90.849D | External constriction, unspecified foot, subsequent encounter | BILLABLE CODE |
| S90.849S | External constriction, unspecified foot, sequela | BILLABLE CODE |
