Chronic nephritic syndrome with C3 glomerulonephritis

This code signifies a persistent inflammatory kidney condition characterized by the presence of C3 glomerulonephritis. It involves ongoing inflammation of the kidney's filtering units (glomeruli) due to abnormal deposition of complement component 3 (C3). This leads to impaired kidney function and various clinical manifestations.

Apply this code when documentation explicitly states a diagnosis of chronic nephritic syndrome with C3 glomerulonephritis. This diagnosis is typically supported by kidney biopsy findings confirming C3 deposition and clinical evidence of chronic kidney disease, proteinuria, hematuria, and/or hypertension.

• Differentiate carefully from dense deposit disease; the Excludes1 note is crucial here.
• Ensure the chronicity of the nephritic syndrome is clearly documented.
• Look for specific mention of C3 glomerulonephritis, not just general glomerulonephritis.