S80.229 Blister (nonthermal), unspecified kneeNon-billable ICD-10-CM code.
M23 Internal derangement of knee ("current injury - see injury of knee and lower leg (S80-S89)")S80.221S Blister (nonthermal), right knee, sequelaS80.222 Blister (nonthermal), left kneeS80.222A Blister (nonthermal), left knee, initial encounterS80.222D Blister (nonthermal), left knee, subsequent encounterS80.222S Blister (nonthermal), left knee, sequelaS80.229 Blister (nonthermal), unspecified knee (this code)S80.229A Blister (nonthermal), unspecified knee, initial encounterS80.229D Blister (nonthermal), unspecified knee, subsequent encounterS80.229S Blister (nonthermal), unspecified knee, sequelaS80.24 External constriction of kneeS80.241 External constriction, right knee