Idiopathic aseptic necrosis of right toe(s)

This code signifies the spontaneous death of bone tissue in the right toe(s) due to a lack of blood supply, without an identifiable cause such as trauma or infection. This condition, also known as avascular necrosis, leads to bone collapse and subsequent joint destruction.

Apply this code when documentation explicitly states idiopathic aseptic necrosis affecting the right toe(s). Supporting clinical evidence includes imaging findings (e.g., MRI, X-ray) demonstrating bone infarction and necrosis, coupled with the absence of a clear etiology.

• Ensure laterality is accurately documented; this code is specific to the right toe(s).
• Distinguish from traumatic avascular necrosis, which would be coded differently.
• Verify that the "idiopathic" or "aseptic" nature is clearly stated or implied by the absence of other causes.