N00.B1 – Acute nephritic syndrome with idiopathic immune membranoproliferative glomerulonephritis (IC-MPGN)

ICD-10-CM 2027 diagnosis code · Glomerular diseases

Billable code

ICD-10-CM code N00.B1

Code: N00.B1 (claims format: N00B1)
Description: Acute nephritic syndrome with idiopathic immune membranoproliferative glomerulonephritis (IC-MPGN)
Short description: Ac neph synd with idio imm membr prolif glomrlneph (IC-MPGN)
Billable: Yes – valid for HIPAA-covered transactions
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
Parent codes: N00 › N00.B

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

N00 – Acute nephritic syndrome

Includes:

acute glomerular disease
acute glomerulonephritis
acute nephritis

Excludes1 (not coded here):

acute tubulo-interstitial nephritis (N10)
nephritic syndrome NOS (N05.-)

Block N00-N08

Excludes1 (not coded here):

hypertensive chronic kidney disease (I12.-)

Code also:

any associated kidney failure (N17-N19).

Index terms for N00.B1

Entries in the ICD-10-CM alphabetic index that lead to this code:

Nephritis, nephritic, acute, with, idiopathic immune membranoproliferative glomerulonephritis

Related codes in N00.B

N00.B2 – Acute nephritic syndrome with secondary immune complex membranoproliferative glomerulonephritis (IC-MPGN)Billable

Frequently asked questions

What is ICD-10 code N00.B1?

N00.B1 is the ICD-10-CM code for acute nephritic syndrome with idiopathic immune membranoproliferative glomerulonephritis (IC-MPGN), in the block N00-N08 (Glomerular diseases).

Is N00.B1 a billable code?

Yes. N00.B1 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does N00.B1 belong to?

It belongs to category N00 – Acute nephritic syndrome.

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.