Nephrotic syndrome with lesion of membranous glomerulonephritis

This code identifies nephrotic syndrome specifically caused by membranous glomerulonephritis. Nephrotic syndrome is characterized by significant proteinuria, hypoalbuminemia, edema, and hyperlipidemia, while membranous glomerulonephritis refers to the underlying kidney pathology involving thickening of the glomerular basement membrane due to immune complex deposition.

Apply this code when documentation clearly states a diagnosis of nephrotic syndrome and specifies that the underlying renal lesion is membranous glomerulonephritis, often confirmed by renal biopsy. This is typically used for patients presenting with the classic symptoms of nephrotic syndrome where the etiology has been determined.

• Ensure documentation explicitly links nephrotic syndrome to membranous glomerulonephritis; avoid assuming the cause.
• Do not use this code if the nephrotic syndrome is due to other specified glomerular lesions (e.g., focal segmental glomerulosclerosis, minimal change disease).
• Consider additional codes for any associated complications or manifestations of the nephrotic syndrome, such as acute kidney injury or severe edema.