ICD-10-CM > N00-N99 > N00-N08 > N04 > N04.2 N04.2 Nephrotic syndrome with diffuse membranous glomerulonephritis Non-Billable/Non-Specific Codes N04.20Nephrotic syndrome with diffuse membranous glomerulonephritis, unspecifiedN04.21Primary membranous nephropathy with nephrotic syndromeN04.22Secondary membranous nephropathy with nephrotic syndromeN04.29Other nephrotic syndrome with diffuse membranous glomerulonephritis