Other secondary chronic gout, vertebrae, without tophus

This code signifies a form of chronic gout that is secondary to another underlying condition, specifically affecting the vertebrae. It indicates the absence of visible or palpable tophi (gouty deposits) in the vertebral region. This diagnosis points to long-standing urate crystal deposition in the spine without the characteristic nodular formations.

Apply this code when documentation clearly states chronic gout affecting the vertebrae, and specifies that it is secondary in nature. This is appropriate for patients with persistent back pain or neurological symptoms attributed to gouty arthritis of the spine, where imaging (e.g., MRI, CT) or clinical examination confirms vertebral involvement without tophaceous deposits.

• Ensure documentation specifies "secondary" gout and "vertebrae" involvement.
• Verify the absence of tophi; if tophi are present, a different code from the M1A.48 series would be appropriate.
• Always code the underlying condition causing the secondary gout first, if known and documented.