Tracking this diagnosis for someone you care for? Eleplan keeps diagnoses, medications and appointments in one plan.
Start free with EleplanN06.21
BillablePrimary membranous nephropathy with isolated proteinuria
N06.21 is the ICD-10-CM code for Primary membranous nephropathy with isolated proteinuria. It is a billable, specific code valid for reimbursement.
N00-N99 Diseases of the genitourinary system
What this means — in plain language
MedlinePlus · NIHYou have two kidneys, each about the size of your fist. They are near the middle of your back, just below the rib cage. Inside each kidney there are about a million tiny structures called nephrons. They filter your blood. They remove wastes and extra water, which become urine. The urine flows through tubes called ureters. It goes to your bladder, which stores the urine until you go to the bathroom. Most kidney…
Read more about Kidney Diseases at MedlinePlus ↗Source: U.S. National Library of Medicine (MedlinePlus). Informational only — not medical advice.
Includes
- •Idiopathic membranous nephropathy (with isolated proteinuria)
- •Primary membranous nephropathy, NOS
Excludes1 — not coded here
- •primary membranous nephropathy with nephrotic syndrome (N04.21)
Frequently asked questions
- What is ICD-10 code N06.21?
- N06.21 is the ICD-10-CM code for "Primary membranous nephropathy with isolated proteinuria". It falls under N00-N99 Diseases of the genitourinary system.
- Is N06.21 a billable code?
- Yes — N06.21 is a billable, specific ICD-10-CM code valid for reimbursement.
- What is excluded from N06.21?
- Excludes1 (not coded here): primary membranous nephropathy with nephrotic syndrome (N04.21).
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
Look up another ICD-10 code or condition