Chapter 14

N00–N99: Diseases of the Genitourinary System

Diseases of the Genitourinary System diagnostic classification updated for 2026.

Chapter Instructions

Excludes2(Not included here)
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
All CodesBillable Only
Browse by Section11 Sections
Internal Codes
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  • N00—

    Acute nephritic syndrome

  • N00.0—

    Acute nephritic syndrome with minor glomerular abnormality

  • N00.1—

    Acute nephritic syndrome with focal and segmental glomerular lesions

  • N00.2—

    Acute nephritic syndrome with diffuse membranous glomerulonephritis

  • N00.3—

    Acute nephritic syndrome with diffuse mesangial proliferative glomerulonephritis

  • N00.4—

    Acute nephritic syndrome with diffuse endocapillary proliferative glomerulonephritis

  • N00.5—

    Acute nephritic syndrome with diffuse mesangiocapillary glomerulonephritis

  • N00.6—

    Acute nephritic syndrome with dense deposit disease

  • N00.7—

    Acute nephritic syndrome with diffuse crescentic glomerulonephritis

  • N00.8—

    Acute nephritic syndrome with other morphologic changes

  • N00.9—

    Acute nephritic syndrome with unspecified morphologic changes

  • N00.A—

    Acute nephritic syndrome with C3 glomerulonephritis

  • N00.B—

    Acute nephritic syndrome with immune complex membranoproliferative glomerulonephritis

  • N00.B1—

    Acute nephritic syndrome with idiopathic immune membranoproliferative glomerulonephritis (IC-MPGN)

  • N00.B2—

    Acute nephritic syndrome with secondary immune complex membranoproliferative glomerulonephritis (IC-MPGN)

  • N01—

    Rapidly progressive nephritic syndrome

  • N01.0—

    Rapidly progressive nephritic syndrome with minor glomerular abnormality

  • N01.1—

    Rapidly progressive nephritic syndrome with focal and segmental glomerular lesions

  • N01.2—

    Rapidly progressive nephritic syndrome with diffuse membranous glomerulonephritis

  • N01.3—

    Rapidly progressive nephritic syndrome with diffuse mesangial proliferative glomerulonephritis

  • N01.4—

    Rapidly progressive nephritic syndrome with diffuse endocapillary proliferative glomerulonephritis

  • N01.5—

    Rapidly progressive nephritic syndrome with diffuse mesangiocapillary glomerulonephritis

  • N01.6—

    Rapidly progressive nephritic syndrome with dense deposit disease

  • N01.7—

    Rapidly progressive nephritic syndrome with diffuse crescentic glomerulonephritis

  • N01.8—

    Rapidly progressive nephritic syndrome with other morphologic changes

  • N01.9—

    Rapidly progressive nephritic syndrome with unspecified morphologic changes

  • N01.A—

    Rapidly progressive nephritic syndrome with C3 glomerulonephritis

  • N02—

    Recurrent and persistent hematuria

  • N02.0—

    Recurrent and persistent hematuria with minor glomerular abnormality

  • N02.1—

    Recurrent and persistent hematuria with focal and segmental glomerular lesions

  • N02.2—

    Recurrent and persistent hematuria with diffuse membranous glomerulonephritis

  • N02.3—

    Recurrent and persistent hematuria with diffuse mesangial proliferative glomerulonephritis

  • N02.4—

    Recurrent and persistent hematuria with diffuse endocapillary proliferative glomerulonephritis

  • N02.5—

    Recurrent and persistent hematuria with diffuse mesangiocapillary glomerulonephritis

  • N02.6—

    Recurrent and persistent hematuria with dense deposit disease

  • N02.7—

    Recurrent and persistent hematuria with diffuse crescentic glomerulonephritis

  • N02.8—

    Recurrent and persistent hematuria with other morphologic changes

  • N02.9—

    Recurrent and persistent hematuria with unspecified morphologic changes

  • N02.A—

    Recurrent and persistent hematuria with C3 glomerulonephritis

  • N02.B—

    Recurrent and persistent immunoglobulin A nephropathy

  • N02.B1—

    Recurrent and persistent immunoglobulin A nephropathy with glomerular lesion

  • N02.B2—

    Recurrent and persistent immunoglobulin A nephropathy with focal and segmental glomerular lesion

  • N02.B3—

    Recurrent and persistent immunoglobulin A nephropathy with diffuse membranoproliferative glomerulonephritis

  • N02.B4—

    Recurrent and persistent immunoglobulin A nephropathy with diffuse membranous glomerulonephritis

  • N02.B5—

    Recurrent and persistent immunoglobulin A nephropathy with diffuse mesangial proliferative glomerulonephritis

  • N02.B6—

    Recurrent and persistent immunoglobulin A nephropathy with diffuse mesangiocapillary glomerulonephritis

  • N02.B9—

    Other recurrent and persistent immunoglobulin A nephropathy

  • N03—

    Chronic nephritic syndrome

  • N03.0—

    Chronic nephritic syndrome with minor glomerular abnormality

  • N03.1—

    Chronic nephritic syndrome with focal and segmental glomerular lesions

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