Other secondary osteonecrosis, right foot

This code signifies bone tissue death in the right foot that is not caused by trauma, infection, or primary idiopathic osteonecrosis. It indicates that the osteonecrosis is a consequence of another underlying medical condition or treatment. This condition leads to structural collapse and potential joint destruction if left untreated.

Apply this code when documentation specifies osteonecrosis of the right foot that is secondary to conditions such as long-term corticosteroid use, alcoholism, Gaucher disease, sickle cell disease, or systemic lupus erythematosus. Ensure the physician explicitly states the secondary nature of the osteonecrosis and its location in the right foot.

• Always code the underlying primary condition causing the secondary osteonecrosis first, followed by this code.
• Verify laterality; this code is specific to the right foot. If the left foot or bilateral involvement is documented, a different code is required.
• Distinguish from primary (idiopathic) osteonecrosis, which would be coded differently.