Ac nep syn w sec imm cmplx membr prolif glomrlneph (IC-MPGN)

This code signifies a rapid onset of kidney inflammation characterized by hematuria, proteinuria, hypertension, and often impaired renal function, specifically caused by secondary immune complex membranoproliferative glomerulonephritis. This particular form of glomerulonephritis involves immune complex deposition within the glomerular capillaries, leading to a distinct pattern of injury.

Use this code when documentation clearly states a diagnosis of acute nephritic syndrome and specifies the underlying cause as secondary immune complex membranoproliferative glomerulonephritis. This typically occurs in the context of systemic diseases like lupus or chronic infections. Supporting documentation should include pathology reports confirming IC-MPGN and clinical findings consistent with acute nephritic syndrome.

• Ensure the documentation explicitly links the acute nephritic syndrome to secondary immune complex membranoproliferative glomerulonephritis.
• Distinguish this from primary MPGN or other forms of glomerulonephritis; the "secondary immune complex" specificity is crucial.
• Code any underlying systemic disease or infection contributing to the secondary IC-MPGN as an additional diagnosis.