Recur and perst IgA nephr w diffus membr prolif glomrlneph

This code signifies a chronic and recurring form of kidney disease characterized by the deposition of immunoglobulin A in the glomeruli, specifically presenting with a diffuse membranoproliferative pattern of injury. This indicates a more severe and widespread involvement of the glomerular capillaries, often leading to progressive renal dysfunction.

Use this code when documentation clearly indicates a diagnosis of IgA nephropathy that is both recurrent (meaning it has reappeared after a period of remission) and persistent (ongoing despite treatment), and a kidney biopsy confirms a diffuse membranoproliferative glomerulonephritis. This code is appropriate for patients with established IgA nephropathy exhibiting this specific and severe histological pattern.

• Ensure the pathology report explicitly states "diffuse membranoproliferative glomerulonephritis" in the context of IgA nephropathy.
• Distinguish from other forms of IgA nephropathy (e.g., focal segmental, minimal change) which have different code assignments.
• Code any associated chronic kidney disease (CKD) stage as a secondary diagnosis.