Heredit nephrop, NEC w diffuse mesangial prolif glomrlneph

This code signifies a genetic kidney disorder characterized by widespread proliferation of mesangial cells within the glomeruli, leading to impaired kidney function. It represents a specific form of hereditary nephropathy that doesn't fit into other defined categories.

Apply this code when documentation confirms a diagnosis of hereditary nephropathy with a biopsy-proven diffuse mesangial proliferative glomerulonephritis, and the condition is not classifiable under other specific hereditary kidney diseases. Supporting documentation includes genetic test results, renal biopsy reports, and physician's diagnostic statements.

• Ensure the documentation explicitly states "diffuse mesangial proliferative glomerulonephritis" in conjunction with hereditary nephropathy.
• Do not use this code if a more specific hereditary nephropathy (e.g., Alport syndrome) is identified, even if mesangial proliferation is present.
• Sequence this code as the primary diagnosis when it is the reason for the encounter, or as a secondary diagnosis if it is a co-morbidity affecting treatment.