N00 – Acute nephritic syndrome
ICD-10-CM 2027 diagnosis code · Glomerular diseases
ICD-10-CM code
N00
- Code
N00(claims format:N00)- Description
- Acute nephritic syndrome
- Billable
- No – use a more specific code below
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 14. Diseases of the genitourinary system (N00-N99)
- Block
- N00-N08 Glomerular diseases
Billable codes under N00
N00 is a header code and cannot be used on claims. Choose the most specific code:
- N00.0 – Acute nephritic syndrome with minor glomerular abnormalityBillable
- N00.1 – Acute nephritic syndrome with focal and segmental glomerular lesionsBillable
- N00.2 – Acute nephritic syndrome with diffuse membranous glomerulonephritisBillable
- N00.3 – Acute nephritic syndrome with diffuse mesangial proliferative glomerulonephritisBillable
- N00.4 – Acute nephritic syndrome with diffuse endocapillary proliferative glomerulonephritisBillable
- N00.5 – Acute nephritic syndrome with diffuse mesangiocapillary glomerulonephritisBillable
- N00.6 – Acute nephritic syndrome with dense deposit diseaseBillable
- N00.7 – Acute nephritic syndrome with diffuse crescentic glomerulonephritisBillable
- N00.8 – Acute nephritic syndrome with other morphologic changesBillable
- N00.9 – Acute nephritic syndrome with unspecified morphologic changesBillable
- N00.A – Acute nephritic syndrome with C3 glomerulonephritisBillable
- N00.B – Acute nephritic syndrome with immune complex membranoproliferative glomerulonephritisHeader (more codes below)
Notes for N00
Includes:
- acute glomerular disease
- acute glomerulonephritis
- acute nephritis
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
Block N00-N08
Excludes1 (not coded here):
- hypertensive chronic kidney disease (I12.-)
Frequently asked questions
What is ICD-10 code N00?
N00 is the ICD-10-CM code for acute nephritic syndrome, in the block N00-N08 (Glomerular diseases).
Is N00 a billable code?
No. N00 is a header code with more specific child codes; report one of the billable codes listed above.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.