Isolated proteinuria w diffuse crescentic glomerulonephritis

This code signifies the presence of protein in the urine without other signs of renal disease, specifically when the underlying kidney pathology is identified as diffuse crescentic glomerulonephritis. This condition involves inflammation of the kidney's filtering units (glomeruli) with characteristic crescent-shaped lesions visible on biopsy, leading to proteinuria.

Apply this code when documentation explicitly states isolated proteinuria and a kidney biopsy confirms diffuse crescentic glomerulonephritis as the cause. This is typically used for patients undergoing diagnostic workup for proteinuria where a specific glomerular disease is identified.

• Ensure documentation clearly differentiates "isolated" proteinuria from nephrotic syndrome or other generalized renal disorders.
• A definitive pathology report confirming diffuse crescentic glomerulonephritis is crucial for accurate coding.
• Do not use this code if other signs of renal disease, such as hematuria, hypertension, or renal insufficiency, are present, as more specific codes would apply.