Posterior reversible encephalopathy syndrome

This code represents Posterior Reversible Encephalopathy Syndrome (PRES), a neurological disorder characterized by acute onset of neurological symptoms, often including headache, seizures, visual disturbances, and altered mental status. It is associated with characteristic white matter changes on neuroimaging, typically reversible.

Use this code when documentation clearly states a diagnosis of PRES, supported by clinical presentation and neuroimaging findings. It is commonly seen in patients with severe hypertension, eclampsia, renal failure, or those on immunosuppressive therapy. Ensure the medical record specifies "posterior reversible encephalopathy syndrome."

• Do not confuse with other encephalopathies; PRES has distinct imaging and clinical features.
• Code any underlying conditions (e.g., hypertension, eclampsia) as additional diagnoses.
• Ensure documentation explicitly states "posterior reversible encephalopathy syndrome" for accurate coding.