Recur & perst IgA nephr w diffus mesangial prolif glomrlneph

This code signifies a chronic and recurring form of IgA nephropathy characterized by widespread proliferation of mesangial cells within the glomeruli. It indicates ongoing disease activity and structural changes within the kidney's filtering units due to IgA deposition.

Apply this code when documentation clearly states a diagnosis of IgA nephropathy that is both recurrent (e.g., episodes of hematuria, proteinuria) and persistent, and specifically identifies diffuse mesangial proliferative changes on renal biopsy. This code is appropriate for patients with established IgA nephropathy showing ongoing disease progression or activity.

• Requires definitive pathology report confirming diffuse mesangial proliferative glomerulonephritis in the context of IgA nephropathy.
• Distinguish from other forms of IgA nephropathy (e.g., focal, minimal change) as this code specifies diffuse mesangial proliferation.
• Ensure documentation supports both "recurrent" and "persistent" aspects of the disease, not just a single episode.