N00.9

Acute nephritic syndrome with unspecified morphologic changes

Billable / specific

N00.9 is a billable, specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes in FY2027.

Inclusion terms

Includes (from N00)

  • acute glomerular disease
  • acute glomerulonephritis
  • acute nephritis

Excludes1

Not coded here — never report together with this code.

  • hypertensive chronic kidney disease (I12.-) (from N00)
  • acute tubulo-interstitial nephritis (N10) (from N00)
  • nephritic syndrome NOS (N05.-) (from N00)

Excludes2

Not included here — may be reported together when both conditions exist.

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

Code also

An additional code may be needed.

  • any associated kidney failure (N17-N19). (from N00)

Also known as

  • Glomerulonephritis, acute
  • Glomerulonephritis, poststreptococcal NEC, acute
  • Nephritis, nephritic, acute
  • Nephritis, nephritic, croupous
  • Nephritis, nephritic, poststreptococcal, acute
  • Nephritis, nephritic, war
  • Syndrome, nephritic, acute

Parent code

  • N00Acute nephritic syndromeHeader

Related codes

  • N00.0Acute nephritic syndrome with minor glomerular abnormalityBillable
  • N00.1Acute nephritic syndrome with focal and segmental glomerular lesionsBillable
  • N00.2Acute nephritic syndrome with diffuse membranous glomerulonephritisBillable
  • N00.3Acute nephritic syndrome with diffuse mesangial proliferative glomerulonephritisBillable
  • N00.4Acute nephritic syndrome with diffuse endocapillary proliferative glomerulonephritisBillable
  • N00.5Acute nephritic syndrome with diffuse mesangiocapillary glomerulonephritisBillable
  • N00.6Acute nephritic syndrome with dense deposit diseaseBillable
  • N00.7Acute nephritic syndrome with diffuse crescentic glomerulonephritisBillable
  • N00.8Acute nephritic syndrome with other morphologic changesBillable
  • N00.AAcute nephritic syndrome with C3 glomerulonephritisBillable
  • N00.BAcute nephritic syndrome with immune complex membranoproliferative glomerulonephritisHeader

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