M87.2 - Osteonecrosis due to previous trauma
M87.27 - Osteonecrosis due to previous trauma, ankle, foot and toes
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)