Huntington's Disease (CPB 0614, reviewed 2026-09-24)
Aetna considers these Huntington's disease services experimental, investigational or unproven: functional MRI and PET imaging for monitoring progression, putaminal magnetic resonance spectroscopy for diagnosis, circulating interleukin and other blood, saliva and CSF biomarker tests, deep brain stimulation, electroconvulsive therapy, fetal striatal and stem cell transplantation, and HTT-lowering gene therapy. The CPT and HCPCS codes for these services are listed as not covered for the indications listed, and ICD-10 codes G10 and Z13.858 are listed as not covered for those indications. Deep brain stimulation for Huntington's disease should currently be considered investigational.