N04.21 Primary membranous nephropathy with nephrotic syndrome

Billable ICD-10-CM code, FY2026. Acts as a Complication or Comorbidity (CC) as a secondary diagnosis.

Applicable to

• Idiopathic membranous nephropathy with nephrotic syndrome

Applies from N04 Nephrotic syndrome

Includes

• congenital nephrotic syndrome
• lipoid nephrosis

MS-DRG index

Defines the logic of DRG(s) 698-700 in MDC 11.

Code annotations containing back-references to N04.21

Back-references to N04.21

• Type 1 Excludes: N06.21 Primary membranous nephropathy with isolated proteinuria ("primary membranous nephropathy with nephrotic syndrome (N04.21)")

Back-references to N04

• Type 1 Excludes: Q63 Other congenital malformations of kidney ("congenital nephrotic syndrome (N04.-)")

Diagnosis Index entries for N04.21

• Nephropathy › membranous (diffuse) › with › nephrotic syndrome › primary
• Nephropathy › membranous (diffuse) › idiopathic, with nephrotic syndrome
• Nephropathy › membranous (diffuse) › primary › with nephrotic syndrome

Nearby codes

• N04 Nephrotic syndrome
• N04.0 Nephrotic syndrome with minor glomerular abnormality
• N04.1 Nephrotic syndrome with focal and segmental glomerular lesions
• N04.2 Nephrotic syndrome with diffuse membranous glomerulonephritis
• N04.20 Nephrotic syndrome with diffuse membranous glomerulonephritis, unspecified
• N04.21 Primary membranous nephropathy with nephrotic syndrome (this code)
• N04.22 Secondary membranous nephropathy with nephrotic syndrome
• N04.29 Other nephrotic syndrome with diffuse membranous glomerulonephritis
• N04.3 Nephrotic syndrome with diffuse mesangial proliferative glomerulonephritis
• N04.4 Nephrotic syndrome with diffuse endocapillary proliferative glomerulonephritis
• N04.5 Nephrotic syndrome with diffuse mesangiocapillary glomerulonephritis