Chronic glomerulonephritis with unspecified pathological lesion in kidney

This code signifies a persistent, long-term inflammation of the kidney's filtering units (glomeruli) where the specific microscopic changes or damage within the kidney tissue have not been identified or documented. It indicates a chronic kidney disease process affecting the glomeruli without a definitive pathological classification.

Apply this code when documentation confirms chronic glomerulonephritis, but a kidney biopsy or other diagnostic studies have not provided a specific pathological diagnosis (e.g., membranous, focal segmental, IgA nephropathy). This is typically used when the exact type of glomerular lesion remains unknown despite clinical evidence of the condition.

• Ensure documentation explicitly states "unspecified pathological lesion" or similar language indicating the lack of a specific histological diagnosis.
• Avoid using this code if a more specific type of chronic glomerulonephritis is documented (e.g., with focal segmental glomerulosclerosis).
• Always look for additional codes to specify any associated chronic kidney disease (CKD) stage if documented.