Unsp nephritic syndrome w diffuse crescentic glomrlneph

This code signifies a severe form of kidney inflammation characterized by the rapid formation of crescent-shaped lesions in the glomeruli, leading to a swift decline in kidney function. It indicates that the specific underlying cause of the nephritic syndrome is not yet identified or documented. This condition often presents with hematuria, proteinuria, hypertension, and acute kidney injury.

Apply this code when documentation clearly states "diffuse crescentic glomerulonephritis" and the broader "nephritic syndrome" but lacks specificity regarding the etiology (e.g., post-infectious, lupus nephritis, ANCA-associated). It is appropriate when the provider has not yet determined the definitive cause of the crescentic changes. Documentation should support the presence of nephritic syndrome features and the histological finding of diffuse crescents.

• Do not use this code if the underlying cause of the crescentic glomerulonephritis is identified (e.g., lupus nephritis, ANCA-associated vasculitis); instead, code the specific etiology.
• Always query the provider for further specificity regarding the etiology of the nephritic syndrome and crescentic changes if not documented.
• This code should be sequenced as the primary diagnosis when it is the reason for the encounter, with any associated manifestations (e.g., acute kidney failure) coded secondarily.