ICD-10-CM > N00-N99 > N00-N08 > N05 > N05.5 N05.5 Unspecified nephritic syndrome with diffuse mesangiocapillary glomerulonephritis Billable/Specific Copy Code Copy Description Applicable To Unspecified nephritic syndrome with membranoproliferative glomerulonephritis, types 1 and 3, or NOS Type 1 Excludes Unspecified nephritic syndrome with C3 glomerulonephritis (N05.A)Unspecified nephritic syndrome with C3 glomerulopathy (N05.A)