S80.841 External constriction, right lower legNon-billable ICD-10-CM code.
M23 Internal derangement of knee ("current injury - see injury of knee and lower leg (S80-S89)")S80.829 Blister (nonthermal), unspecified lower legS80.829A Blister (nonthermal), unspecified lower leg, initial encounterS80.829D Blister (nonthermal), unspecified lower leg, subsequent encounterS80.829S Blister (nonthermal), unspecified lower leg, sequelaS80.84 External constriction of lower legS80.841 External constriction, right lower leg (this code)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 encounter