Acute neph syndrome w focal and segmental glomerular lesions

This code signifies an acute inflammatory condition of the kidney's glomeruli, specifically characterized by the presence of focal and segmental lesions. This means that only some glomeruli are affected (focal), and within those affected glomeruli, only parts of the glomerular tuft are damaged (segmental). It typically presents with sudden onset hematuria, proteinuria, hypertension, and renal impairment.

Apply this code when documentation clearly indicates an acute nephritic syndrome confirmed by renal biopsy showing focal and segmental glomerular lesions. This diagnosis is often made following a rapid decline in renal function accompanied by signs of glomerular inflammation. Ensure the "acute" nature of the syndrome is explicitly stated or strongly implied by the clinical presentation and timeline.

• Differentiate from chronic nephritic syndromes; the "acute" designation is crucial.
• Look for biopsy results explicitly detailing "focal and segmental glomerulosclerosis" or similar terminology in the context of acute nephritic presentation.
• Code any associated manifestations, such as hypertension or acute kidney injury, as secondary diagnoses.