S80.242D External constriction, left knee, subsequent encounterBillable ICD-10-CM code, FY2026.
Built from S80.242 with 7th character D (subsequent encounter).
M23 Internal derangement of knee ("current injury - see injury of knee and lower leg (S80-S89)")S80.241A External constriction, right knee, initial encounterS80.241D External constriction, right knee, subsequent encounterS80.241S External constriction, right knee, sequelaS80.242 External constriction, left kneeS80.242A External constriction, left knee, initial encounterS80.242D External constriction, left knee, subsequent encounter (this code)S80.242S External constriction, left knee, sequelaS80.249 External constriction, unspecified kneeS80.249A External constriction, unspecified knee, initial encounterS80.249D External constriction, unspecified knee, subsequent encounterS80.249S External constriction, unspecified knee, sequela