Recur and perst IgA nephr with diffus mesangiocap glomrlneph

This code signifies a specific and severe form of IgA nephropathy characterized by its ongoing and relapsing nature, coupled with diffuse mesangiocapillary glomerulonephritis. This histological pattern indicates significant glomerular damage with mesangial cell proliferation and capillary wall thickening, contributing to progressive renal dysfunction.

Use this code when documentation explicitly states recurrent and persistent IgA nephropathy alongside a biopsy-confirmed diagnosis of diffuse mesangiocapillary glomerulonephritis. This applies to patients experiencing repeated episodes of hematuria and proteinuria, with biopsy findings confirming both the IgA deposition and the specific mesangiocapillary pattern.

• Ensure documentation specifies both "recurrent and persistent" and "diffuse mesangiocapillary glomerulonephritis" for accurate coding.
• Do not use this code for other histological patterns of IgA nephropathy (e.g., focal segmental, minimal change) or for acute presentations without evidence of recurrence/persistence.
• Consider sequencing this code as the primary diagnosis if it is the main reason for the encounter and treatment.