Acute glomerulonephritis with unspecified pathological lesion in kidney

This code signifies an acute inflammation of the glomeruli within the kidney, where the specific microscopic changes or underlying cause of the lesion has not been identified or documented. It represents a sudden onset of kidney dysfunction characterized by glomerular damage, but without a definitive pathological diagnosis.

Use this code when documentation clearly states "acute glomerulonephritis" but lacks further specificity regarding the type of lesion (e.g., proliferative, membranous, minimal change). This is appropriate when a kidney biopsy has not been performed or its results are pending or inconclusive regarding the exact pathological findings.

• Avoid using this code if more specific pathological findings (e.g., rapidly progressive, post-streptococcal) are documented; always code to the highest level of specificity.
• This is a "not otherwise specified" (NOS) code; strive for more detailed documentation from the provider whenever possible.
• Consider sequencing this code as a primary diagnosis when it is the main reason for the encounter, or as a secondary diagnosis if it's a co-morbidity impacting treatment.