| ICD-10 Code | Description |
| M87.071 | Idiopathic aseptic necrosis of right ankle |
| M87.072 | Idiopathic aseptic necrosis of left ankle |
| M87.073 | Idiopathic aseptic necrosis of unspecified ankle |
| M87.074 | Idiopathic aseptic necrosis of right foot |
| M87.075 | Idiopathic aseptic necrosis of left foot |
| M87.076 | Idiopathic aseptic necrosis of unspecified foot |
| M87.077 | Idiopathic aseptic necrosis of right toe(s) |
| M87.078 | Idiopathic aseptic necrosis of left toe(s) |
| M87.079 | Idiopathic aseptic necrosis of unspecified toe(s) |
