Osteonecrosis in diseases classd elswhr, right forearm

This code signifies the death of bone tissue in the right forearm due to impaired blood supply, occurring as a manifestation of another underlying disease process. This condition leads to bone collapse and potential joint destruction if left untreated.

Apply this code when documentation specifies osteonecrosis affecting the right forearm, and the medical record clearly links this condition to an underlying systemic disease (e.g., lupus, sickle cell disease, corticosteroid use). Supporting documentation should include imaging reports confirming osteonecrosis and physician notes detailing the associated primary disease.

• Always sequence the underlying systemic disease code first, as this code indicates osteonecrosis "in diseases classified elsewhere."
• Ensure laterality (right forearm) is explicitly documented. If left or bilateral, a different code is required.
• Distinguish from osteonecrosis due to trauma or other specified causes, which would be coded differently.