--- M87.271 Osteonecrosis due to previous trauma, right ankle

--- M87.272 Osteonecrosis due to previous trauma, left ankle

--- M87.273 Osteonecrosis due to previous trauma, unspecified ankle

--- M87.274 Osteonecrosis due to previous trauma, right foot

--- M87.275 Osteonecrosis due to previous trauma, left foot

--- M87.276 Osteonecrosis due to previous trauma, unspecified foot

--- M87.277 Osteonecrosis due to previous trauma, right toe(s)

--- M87.278 Osteonecrosis due to previous trauma, left toe(s)

--- M87.279 Osteonecrosis due to previous trauma, unspecified toe(s)