2026 ICD-10-CM Diagnosis Code N04.B1
Nephrotic syndrome with idiopathic immune complex membranoproliferative glomerulonephritis (IC-MPGN)
- ICD-10-CM Code:
- N04.B1
- ICD-10 Code for:
- Nep syn w idio imm cmplx membr prolif glomrlneph (IC-MPGN)
- Is Billable?
- Yes - Valid for Submission
- Code Navigator:
N04.B1 is a billable diagnosis code used to specify a medical diagnosis of nephrotic syndrome with idiopathic immune complex membranoproliferative glomerulonephritis (ic-mpgn). The code is valid during the current fiscal year for the submission of HIPAA-covered transactions from October 01, 2025 through September 30, 2026.
New 2026 ICD-10-CM Code
N04.B1 is new to ICD-10-CM code set for the FY 2026, effective October 1, 2025. The National Center for Health Statistics (NCHS) has published an update to the ICD-10-CM diagnosis codes which became effective October 1, 2025. This is a new and revised code for the FY 2026 (October 1, 2025 - September 30, 2026).
Index to Diseases and Injuries References
The following annotation back-references for this diagnosis code are found in the injuries and diseases index. The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10-CM code(s).
Index of External Cause of Injuries
References found for this diagnosis code in the External Cause of Injuries Index:
- Nephritis, nephritic(albuminuric) (azotemic) (congenital) (disseminated) (epithelial) (familial) (focal) (granulomatous) (hemorrhagic) (infantile) (nonsuppurative, excretory) (uremic)
- with
- glomerular lesion
- idiopathic immune membranoproliferative glomerulonephritis (IC-MPGN)
Replacement Code
N04B1 replaces the following previously assigned ICD-10-CM code(s):
- N04.8 - Nephrotic syndrome with other morphologic changes
Code History
- FY 2026 - Code Added, effective from 10/1/2025 through 9/30/2026
