M87.2Osteonecrosis due to previous trauma

M87.2 is the ICD-10-CM diagnosis code for osteonecrosis due to previous trauma. It belongs to category M87 (osteonecrosis), block M86-M90 (other osteopathies) and chapter 13 (diseases of the musculoskeletal system and connective tissue). It is a header code, so it can't be reported by itself; one of its 10 subcodes must be used instead.

Within M87 (osteonecrosis), M87.2 is specifically for osteonecrosis due to previous trauma. Related codes cover idiopathic aseptic necrosis of bone (M87.0), due to drugs (M87.1), other secondary osteonecrosis (M87.3), other osteonecrosis (M87.8) and unspecified (M87.9).

To report this condition, pick the subcode that matches the documentation: M87.20 (unspecified bone), M87.21 (shoulder), M87.22 (humerus), M87.23 (of radius, ulna and carpus), M87.24 (hand and fingers), M87.25 (pelvis and femur), M87.26 (tibia and fibula), M87.27 (ankle, foot and toes) and 2 more.

Use an additional code to identify major osseous defect, if applicable (M89.7-).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.