N02.B1 — Recurrent and persistent immunoglobulin A nephropathy with glomerular lesion

N02.B1

ICD-10 Chapter 14: Genitourinary System — illustrative image — Chapter 14: Diseases of the genitourinary system (N00–N99) — illustrative image

What this code means

Primary IgA nephropathy is the commonest glomerular disease, in which IgA antibody deposits damage the kidney filters, often causing blood in the urine.

Also called: iga nephropathy, primary iga nephropathy, bergers disease.

When this code is used

Used for primary IgA nephropathy.

Where it sits in ICD-10-CM

Code N02.B1 belongs to Chapter 14: Diseases of the genitourinary system, which covers codes N00–N99 in the FY2027 ICD-10-CM tabular list. The official description above is copied verbatim from the CDC/NCHS FY2027 code file.

Learn more about this condition

Condition guide: IgA Nephropathy

Related symptoms

Related anatomy

Kidneys

Watch: related videos

▶ WatchIga nephropathy kidneyzone ep 57

Frequently asked questions

What is ICD-10-CM code N02.B1?

N02.B1 is the ICD-10-CM diagnosis code for “Recurrent and persistent immunoglobulin A nephropathy with glomerular lesion”. Primary IgA nephropathy is the commonest glomerular disease, in which IgA antibody deposits damage the kidney filters, often causing blood in the urine.

When is code N02.B1 used?

Used for primary IgA nephropathy. It belongs to Chapter 14 of ICD-10-CM (Diseases of the genitourinary system).

This guide explains ICD-10-CM codes in plain language for patients, students and other readers. It is educational information only — not coding, billing or medical advice. The code recorded for any real encounter is assigned from the full clinical documentation by the treating team and qualified coders, and only they can decide which code fits a specific case.