S80.842D External constriction, left lower leg, subsequent encounterBillable ICD-10-CM code, FY2026.
Built from S80.842 with 7th character D (subsequent encounter).
M23 Internal derangement of knee ("current injury - see injury of knee and lower leg (S80-S89)")S80.841A External constriction, right lower leg, initial encounterS80.841D External constriction, right lower leg, subsequent encounterS80.841S External constriction, right lower leg, sequelaS80.842 External constriction, left lower legS80.842A External constriction, left lower leg, initial encounterS80.842D External constriction, left lower leg, subsequent encounter (this code)S80.842S External constriction, left lower leg, sequelaS80.849 External constriction, unspecified lower legS80.849A External constriction, unspecified lower leg, initial encounterS80.849D External constriction, unspecified lower leg, subsequent encounterS80.849S External constriction, unspecified lower leg, sequela