2024 ICD-10-CM Diagnosis Code N04.21

Primary membranous nephropathy with nephrotic syndrome

• N04.21 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
• ICD-10-CM N04.21 is a new 2024 ICD-10-CM code that became effective on October 1, 2023.
• This is the American ICD-10-CM version of N04.21 – other international versions of ICD-10 N04.21 may differ.

Applicable To

• Idiopathic membranous nephropathy with nephrotic syndrome

The following code(s) above N04.21 contain annotation back-references

 that may be applicable to N04.21:

• N00-N99  Diseases of the genitourinary system
• N00-N08  Glomerular diseases
• N04  Nephrotic syndrome

ICD-10-CM N04.21 is grouped within Diagnostic Related Group(s) (MS-DRG v41.0):

• 698 Other kidney and urinary tract diagnoses with mcc
• 699 Other kidney and urinary tract diagnoses with cc
• 700 Other kidney and urinary tract diagnoses without cc/mcc

Code History

• 2024 (effective 10/1/2023): New code

Code annotations containing back-references to N04.21:

• Type 1 Excludes: N06.21

Diagnosis Index entries containing back-references to N04.21:

• NephropathyN28.9 – see also Nephritis
  • membranous (diffuse) N06.20
    • with
      • nephrotic syndromeN04.20
        • primary N04.21
    • primaryN06.21
      • with nephrotic syndrome N04.21
    • idiopathic, with nephrotic syndrome N04.21