M87.23Osteonecrosis due to previous trauma of radius, ulna and carpus

M87.23 is the ICD-10-CM diagnosis code for osteonecrosis due to previous trauma of radius, ulna and carpus. 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 9 subcodes must be used instead.

Within M87.2 (osteonecrosis due to previous trauma), M87.23 is specifically for osteonecrosis due to previous trauma of radius, ulna and carpus. Related codes cover unspecified bone (M87.20), shoulder (M87.21), humerus (M87.22), hand and fingers (M87.24), pelvis and femur (M87.25), tibia and fibula (M87.26), ankle, foot and toes (M87.27), other site (M87.28) and 1 more.

To report this condition, pick the subcode that matches the documentation: M87.231 (radius), M87.232 (radius), M87.233 (radius), M87.234 (ulna), M87.235 (ulna), M87.236 (ulna), M87.237 (carpus), M87.238 (carpus) and 1 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.