By April 14, 2026: Billing team must implement the following in the claims processing system and EMR: (1) Update billing rules to REQUIRE prior authorization for CPT codes 95965, 95966, 95967, and HCPCS code S8035 when billed with any ICD-10 code OTHER than G40.011–G40.019, G40.111–G40.119, G40.211–G40.219, G40.311, G40.319, G40.A11–G40.A19, G40.B11–G40.B19, G40.411–G40.419, G40.811–G40.89, G40.911–G40.919 (intractable epilepsy only). (2) Add denial rule: Any claim for MEG with non-intractable epilepsy codes (G40.101–G40.109, G40.201–G40.209, G40.301, G40.309, G40.A01–G40.A09, G40.B01–G40.B09, G40.401–G40.409, G40.501–G40.509, G40.801–G40.802, G40.901–G40.909) or with brain tumor, Alzheimer's disease, Parkinson's disease, multiple sclerosis, migraine, chronic pain, traumatic brain injury, ADHD, autism, schizophrenia, or other psychiatric/neurological diagnoses will be automatically denied as experimental/investigational. (3) Provider education: Communicate to neurology and neurosurgery staff that MEG requires documentation of: (a) confirmed intractable focal epilepsy diagnosis, (b) completion of standard EEG and neuroimaging, (c) discordance or continuing questions from prior localization studies. (4) Update encounter templates and order entry systems to include required clinical justification fields. Failure to implement will result in claim denials and patient financial liability.