Hemorrhagic fever with renal syndrome

This diagnosis code signifies a severe viral infection characterized by fever, bleeding tendencies, and significant kidney dysfunction. It is caused by hantaviruses and can lead to acute kidney injury, shock, and multi-organ failure.

Assign this code when documentation clearly indicates a diagnosis of hemorrhagic fever with renal syndrome, often confirmed by serological testing for hantavirus. This typically presents in patients with a history of exposure to rodents, followed by the classic triad of fever, hemorrhage, and renal impairment.

• Ensure documentation specifies "renal syndrome" to differentiate from other hantavirus infections.
• Do not code concurrently with hantavirus (cardio)-pulmonary syndrome (B33.4) due to the Excludes1 note.
• Look for specific mention of kidney involvement, such as acute kidney injury, proteinuria, or elevated creatinine.