ICD-10-CM > N00-N99 > N00-N08 > N06 > N06.2 > N06.20 N06.20 Isolated proteinuria with diffuse membranous glomerulonephritis, unspecified Billable/Specific Copy Code Copy Description Applicable To Membranous nephropathy, NOS Type 1 Excludes membranous nephropathy NOS with nephrotic syndrome (N04.20)