N00
Acute nephritic syndrome
N00 is a non-billable ICD-10-CM code category for acute nephritic syndrome. Report a more specific code from it instead. It is part of the FY2027 code set, effective October 1, 2026. The more specific codes under it are 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 and 8 more. Its coding notes include a Code also instruction, 3 Excludes1 entries and 8 Excludes2 entries.
Code also
Two codes may be needed to describe the condition. This note gives no sequencing order.
Excludes1
Not coded here. The listed conditions generally should not be reported together.
Excludes2
Not included here. Both codes may be reported if the patient has both conditions.
Also from chapter/block level (8 notes)
- 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)
Includes
Further defines or gives examples of the content of the category.
- acute glomerular disease
- acute glomerulonephritis
- acute nephritis
More specific codes under N00 12
- 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
- N00.9Acute nephritic syndrome with unspecified morphologic changesBillable
- N00.AAcute nephritic syndrome with C3 glomerulonephritisBillable
- N00.BAcute nephritic syndrome with immune complex membranoproliferative glomerulonephritisHeader