M93: Other osteochondropathies

M93.9: Osteochondropathy, unspecified

The bones in a joint are covered with cartilage. When the joint is moved, the cartilage prevents the bones from rubbing against one another. The cartilage is normally strong and elastic, with a smooth surface.

When bone or cartilage changes it can be painful. You may also no longer be able to move the affected area so well.