Progressive vascular leukoencephalopathy

This code signifies a chronic and worsening condition affecting the brain's white matter due to vascular disease. It involves the progressive destruction of myelin and nerve fibers, leading to neurological deficits. This leukoencephalopathy is directly attributable to underlying cerebrovascular pathology.

Apply this code when documentation clearly indicates a diagnosis of progressive white matter changes in the brain caused by vascular compromise. This diagnosis is typically supported by neuroimaging (e.g., MRI showing diffuse white matter hyperintensities) and clinical evidence of progressive neurological decline, such as cognitive impairment, motor deficits, or gait disturbances, in the context of vascular risk factors or established cerebrovascular disease.

• Differentiate from other forms of leukoencephalopathy not primarily vascular in origin (e.g., genetic, inflammatory, toxic).
• Ensure documentation specifies "progressive" and "vascular" to support this specific code.
• Code any underlying cerebrovascular conditions (e.g., cerebral atherosclerosis, hypertension) as additional diagnoses.