Clinical Policy: EEG in the Evaluation of Headache
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This policy governs the use and coverage stance of electroencephalography (EEG) when performed for the diagnostic evaluation of headache for members/enrollees of the health plan.
No material clinical or coverage changes in this revision.
Coverage Criteria for EEG in Headache Evaluation
Medical necessity criteria
Covered when there is clinical suspicion beyond routine headache evaluation (examples provided); routine EEG for headache alone is not supported.
policy statement
Examples consistent with AAN guidance and clinical policy
Routine electroencephalography (EEG) performed solely for the evaluation of migraine, other primary headache syndromes, or unspecified headache is considered not medically necessary when billed with the ICD-10-CM codes listed in Table 2. The policy reflects that there is insufficient evidence to support routine EEG for headache evaluation and that EEG has not been shown to identify headache subtypes or effectively screen for structural causes of headache.
Coding: CPT and ICD-10 Pairings
| 95812 | Electroencephalogram (EEG) extended monitoring; 41 to 60 minutes |
| 95813 | Electroencephalogram (EEG) extended monitoring; 61 to 119 minutes |
| 95816 | Electroencephalogram (EEG); including recording awake and drowsy |
| 95819 | Electroencephalogram (EEG); including recording awake and asleep |
| 95822 | Electroencephalogram (EEG); recording in coma or sleep only |
| G43.001-G43.E19 | Migraine (range as listed in Table 2) |
| G44.001-G44.89 | Other headache syndromes |
| R51.0 | Headache with orthostatic component, not elsewhere classified |
| R51.9 | Headache, unspecified |
Provider Actions, Documentation & Billing Notes
Not medically necessary pairings — denial risk
Claims for the EEG CPT codes listed in Table 1 billed with the headache ICD-10-CM codes listed in Table 2 are considered not medically necessary and are subject to denial. Providers should obtain prior authorization when required by the plan and be aware that these pairings present a denial risk.
- Not medically necessary CPTs when billed with headache ICD-10s: 95812, 95813, 95816, 95819, 95822
- Not medically necessary ICD-10s when billed with EEG CPTs: G43.001–G43.E19 (Migraine); G44.001–G44.89 (Other headache syndromes); R51.0 (Headache with orthostatic component); R51.9 (Headache, unspecified)
Clinical documentation to support further evaluation
Document clinical features that justify further evaluation beyond routine headache management. Include specific neurologic findings, acute or atypical presentation elements, and any systemic signs that raise concern for secondary causes.
- Document presence of altered mental status or seizures
- Document focal neurologic deficits (new weakness, sensory changes, aphasia, visual field deficits)
- Document a new or different headache, subacute/progressive worsening over months, or headache of maximum severity at onset
- Document new severe headache in pregnancy or postpartum and headaches associated with exertion (e.g., exercise, sexual activity)
- Document systemic signs: fever, hypertension, myalgias, weight loss, scalp tenderness, or symptoms suggesting a systemic disorder
- Document when neuroimaging, lumbar puncture, or other targeted testing was performed or considered
Provider action — documentation & billing note
Providers: include a focused history and neurologic exam in the record and, when applicable, cite the specific documented findings (see list) when requesting EEG or appealing a denial. Absence of these findings when billing EEG for headache may result in claim denial.
Background
An electroencephalogram (EEG) is a noninvasive recording of electrical activity from the scalp and is used primarily to evaluate suspected seizure disorders and encephalopathies. While EEG is an important diagnostic tool for epilepsy, its role in the routine evaluation of headache is limited: the evidence does not support routine use of EEG to distinguish headache subtypes or to screen for structural causes, and EEG is reserved for situations with clinical features suggestive of neurologic dysfunction (for example, altered mental status, seizures, focal neurologic signs, or other atypical features).
Definitions
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