Lead-induced chronic gout, vertebrae, without tophus (tophi)

This code signifies chronic gout caused by lead exposure, specifically affecting the vertebrae, without the presence of tophaceous deposits. It indicates a persistent inflammatory arthritis resulting from uric acid crystal deposition in the spinal column due to lead toxicity.

Use this code when documentation clearly links chronic gout in the vertebral column to lead poisoning, and explicitly states the absence of tophi. This typically applies to patients with a history of lead exposure presenting with chronic back pain, stiffness, and elevated uric acid levels, where imaging or clinical examination confirms vertebral involvement without visible tophi.

• Ensure documentation specifies "chronic" gout and a direct causal link to "lead-induced" etiology.
• Verify the anatomical site is "vertebrae" and explicitly note "without tophus (tophi)."
• Do not use this code if tophi are present, if the gout is acute, or if the lead exposure is not documented as the cause.