Chronic nephritic syndrome w diffuse mesangiocap glomrlneph

This code signifies a persistent kidney disorder characterized by inflammation of the glomeruli, specifically involving proliferation of mesangial cells and capillary wall thickening. It represents a chronic form of glomerulonephritis where immune complex deposition leads to progressive renal damage.

Assign this code when documentation explicitly states a diagnosis of chronic nephritic syndrome and specifies diffuse mesangiocapillary glomerulonephritis as the underlying pathological finding. This diagnosis is typically confirmed by renal biopsy.

• Ensure the documentation clearly distinguishes this from acute or rapidly progressive forms of glomerulonephritis.
• Verify that the specific type of glomerulonephritis is identified as "diffuse mesangiocapillary" and not another histological variant.
• Remember the Excludes1 notes; do not code this alongside N03.A, which specifies C3 glomerulonephritis or glomerulopathy.