Rapidly progr neph syndrome w diffuse crescentic glomrlneph

This code signifies a severe and rapidly worsening form of kidney inflammation characterized by the rapid decline of renal function, often leading to end-stage renal disease within weeks or months. Histologically, it is defined by the presence of crescents in more than 50% of the glomeruli, indicating extensive glomerular damage.

Assign this code for patients presenting with acute renal failure, hematuria, proteinuria, and red blood cell casts, where kidney biopsy confirms diffuse crescentic glomerulonephritis. It is appropriate when the clinical progression is aggressive and swift, distinguishing it from more chronic forms of glomerulonephritis.

• Ensure documentation explicitly states "rapidly progressive" and "diffuse crescentic glomerulonephritis" based on biopsy findings.
• Do not use for chronic glomerulonephritis or other forms of nephritic syndrome without the specified rapid progression and crescentic changes.
• Consider sequencing this code as the primary diagnosis when it is the main reason for the encounter and treatment.