Other recurrent and persistent immunoglobulin A nephropathy

This code signifies a chronic or recurring kidney disease characterized by the deposition of immunoglobulin A (IgA) in the glomeruli, leading to inflammation and damage. It specifically applies when the IgA nephropathy is not resolving and continues to manifest over time, impacting kidney function.

Use this code for patients with a confirmed diagnosis of IgA nephropathy that has been documented as recurrent or persistently active. This typically involves ongoing proteinuria, hematuria, or declining renal function attributed to the IgA deposits, as evidenced by biopsy results and clinical assessments.

• Ensure documentation clearly states "recurrent" or "persistent" IgA nephropathy; otherwise, a non-recurrent code may be more appropriate.
• Always sequence this code with any associated chronic kidney disease (CKD) stage (e.g., N18.x) to fully capture the patient's renal status.
• Distinguish from acute IgA nephropathy or a single episode that has resolved.