S90.423 Blister (nonthermal), unspecified great toeNon-billable ICD-10-CM code.
S80 Superficial injury of knee and lower leg ("superficial injury of ankle and foot (S90.-)")S90.421S Blister (nonthermal), right great toe, sequelaS90.422 Blister (nonthermal), left great toeS90.422A Blister (nonthermal), left great toe, initial encounterS90.422D Blister (nonthermal), left great toe, subsequent encounterS90.422S Blister (nonthermal), left great toe, sequelaS90.423 Blister (nonthermal), unspecified great toe (this code)S90.423A Blister (nonthermal), unspecified great toe, initial encounterS90.423D Blister (nonthermal), unspecified great toe, subsequent encounterS90.423S Blister (nonthermal), unspecified great toe, sequelaS90.424 Blister (nonthermal), right lesser toe(s)S90.424A Blister (nonthermal), right lesser toe(s), initial encounter