Unsp neph syndrome w focal and segmental glomerular lesions

This code signifies a form of nephritic syndrome characterized by inflammation of the kidney's filtering units (glomeruli) where only some glomeruli are affected (focal) and within those affected, only parts of the glomerular tuft are damaged (segmental). The specific underlying cause or type of nephritic syndrome remains undetermined.

Apply this code when documentation indicates focal and segmental glomerular lesions are present in the context of an unspecified nephritic syndrome. This is typically used when a renal biopsy confirms the focal and segmental nature of the lesions, but further diagnostic workup to identify the specific etiology of the nephritic syndrome is incomplete or inconclusive.

• Do not use this code if a more specific type of nephritic syndrome (e.g., post-infectious, rapidly progressive) is documented.
• Ensure the documentation explicitly states "focal and segmental glomerular lesions" in conjunction with an unspecified nephritic syndrome.
• Consider sequencing this code as a primary diagnosis when it is the main reason for the encounter, or as a secondary diagnosis if another condition is driving the primary care.