A81.01

HCC Category Mapping

What This Code Means

Variant Creutzfeldt-Jakob disease (vCJD) is a rare, rapidly progressive brain disorder caused by abnormal prion proteins, typically acquired through consumption of beef products contaminated with mad cow disease. It causes severe dementia, movement problems, and is ultimately fatal.

Coding Tips

• •This is a reportable disease in most jurisdictions; verify local public health reporting requirements when assigning this code
• •vCJD is distinct from sporadic CJD (A81.00) and familial CJD (A81.02); ensure the clinical documentation clearly specifies the variant form before coding

Clinical Significance

Variant Creutzfeldt-Jakob disease is the human form of bovine spongiform encephalopathy (mad cow disease), distinguished from other CJD types by younger age of onset, psychiatric symptoms preceding dementia, and distinct neuropathological findings. This is a reportable disease with significant public health implications.

Documentation Requirements

• ✓Diagnostic criteria specific to vCJD: early psychiatric symptoms, painful sensory symptoms, delayed neurological signs
• ✓Brain MRI showing pulvinar sign (high signal in posterior thalamus)
• ✓Age of onset documented (typically younger than sporadic CJD, often under 55)
• ✓Exposure history assessment: travel to or residence in BSE-endemic areas, blood transfusion history
• ✓Tonsil biopsy results if performed (positive PrPSc immunostaining is confirmatory)

Commonly Confused Codes