Epilepsy (Drug-Resistant) Surgery and VNS Cost Calculator
This calculator estimates the out-of-pocket cost of surgical treatment for drug-resistant (intractable) epilepsy in Korea, and keeps the same pure calculation model as the Korean page for vagus nerve stimulation (VNS) implantation, resective surgery (temporal lobectomy or lesionectomy), disconnection surgery (corpus callosotomy or hemispherotomy), and VNS generator (battery) replacement. About 70 percent of epilepsy is controlled with medication, but when seizures persist despite two or more appropriate anti-seizure drugs, the epilepsy is classed as drug-resistant and surgery is considered. Drug-resistant epilepsy is a registered severe-intractable special-case condition, and VNS has been covered by Korean National Health Insurance since about 2005, so the figures follow 2026 Korean rules.
Procedure types and covered fees
VNS (vagus nerve stimulation) is a palliative neuromodulation therapy: an electrode is placed on the vagus nerve in the neck and an implanted pulse generator (IPG) under the chest skin delivers electrical stimulation that reduces seizure frequency and severity. It is used mainly for multifocal or generalized seizures that are not amenable to resection. The stimulator and electrode material dominate the bill, so the model uses about KRW 1,500,000 for the procedure, KRW 10,000,000 for the covered IPG, KRW 2,000,000 for the electrode, and a covered ward fee of KRW 150,000 per day, for a covered total near KRW 14,100,000 and a 10 percent special-case self-pay of about KRW 1,410,000.
Resective surgery (temporal lobectomy or lesionectomy) removes the seizure focus by craniotomy and aims for a cure, so there is no device and no battery, but the stay is longer (covered total near KRW 8,100,000). Disconnection surgery (corpus callosotomy or hemispherotomy) interrupts seizure spread as a palliative craniotomy (near KRW 9,900,000). A VNS generator (battery) replacement reuses the vagus nerve electrode and changes only the chest generator, so the electrode cost is zero and the stay is short.
- VNS is palliative (reduces seizures) with an implanted generator whose battery lasts 5-10 years.
- Resective surgery is a one-time, potentially curative craniotomy with no device.
- Disconnection surgery (callosotomy, hemispherotomy) is a palliative craniotomy for generalized or drop seizures.
- Pre-surgical invasive EEG (intracranial electrodes) can be a large separate cost, not included by default.
Drug-resistant epilepsy special case is 10 percent, not 5 percent
The Ministry of Health and Welfare notice on special copay calculation (No. 2026-101, effective 2026-05-01) lists drug-resistant epilepsy under Annex 4-2, severe-intractable special-case conditions, with special code V279. The ICD codes include drug-resistant localization-related idiopathic epilepsy (G40.01), symptomatic epilepsy with complex partial seizures (G40.21), and generalized idiopathic epilepsy (G40.31). When registered, the covered self-pay drops from the ordinary inpatient 20 percent to 10 percent. Some pages say “5 percent,” but that is a confusion with the cancer, cardiac, cerebrovascular, and severe-burn list (Annex 3, 5 percent); drug-resistant epilepsy is a severe-intractable condition at 10 percent.
Crucially, unlike the cancer/cardiac special case (up to 30 days from surgery), the epilepsy severe-intractable special case applies for 5 years from registration and covers the whole related benefit course — VNS, surgery, medication, and outpatient visits. Note that, unlike the automatically applied cancer/cardiac special case, the rare/severe-intractable special case requires a registration application, so confirm registration at the hospital admissions desk after the drug-resistant diagnosis. The special case applies only when epilepsy is confirmed drug-resistant (seizures uncontrolled by two or more appropriate anti-seizure drugs); ordinary drug-responsive epilepsy does not qualify. Specific rare syndromes such as Dravet or Lennox-Gastaut may have their own ultra-rare or rare-disease codes, so confirm the exact code with the hospital.
VNS vs resective surgery: compare lifetime cost
VNS and resective surgery have different clinical goals: VNS reduces seizure frequency and severity as a palliative device therapy, while resective surgery removes the focus and aims for a cure in one operation. The cost structure differs too — a VNS battery is depleted every 5-10 years and requires a replacement surgery each time, while resective surgery has no device and no replacement.
The calculator computes a 15-year lifetime self-pay for each at the current benefit rate — the VNS initial implant plus its expected battery replacements, versus the one-time resective surgery — so you can compare long-term cost. But the choice is not by cost alone: focus location and number, curative potential, surgical risk, and daily life all matter, and should be discussed with the neurosurgeon and neurologist. A clear single focus may favor curative resection, while multifocal or generalized seizures may favor VNS.
Battery replacement, ceiling, indemnity, and tax credit
When the VNS battery runs out, a generator replacement reuses the vagus nerve electrode and changes only the chest generator, with a shorter stay than the first implant; if the special case is still active, the replacement is also 10 percent. The calculator projects the expected battery life (5-10 years) and the estimated replacement self-pay.
The 2026 annual out-of-pocket ceiling ranges from about KRW 900,000 (income decile 1) to KRW 8,430,000 (decile 10) and refunds covered self-pay above the cap, usually the following August. VNS and epilepsy surgery are reimbursed as inpatient medical expense by private indemnity insurance (the ceiling-refunded amount is not double-paid, and upper-grade room surcharges are usually reimbursed only up to 50 percent). The Korean medical expense tax credit (Income Tax Act Article 59-4) refunds 15 percent of expense above 3 percent of salary; for a registered severe-disease patient (V279) the usual KRW 7,000,000 cap does not apply (Enforcement Decree Article 118-5), so even large self-pay is fully creditable.
How to read the result
Enter the procedure type (VNS implant, resective, disconnection, or VNS replacement), the seizure type (focal, generalized, or multifocal), whether the special case is registered, stay days, hospital level, insurance type, any non-covered items (such as pre-surgical invasive EEG), income decile, private indemnity generation, and salary. The result shows covered and non-covered self-pay, the special-case 10 percent versus 20 percent comparison, the VNS versus resective 15-year lifetime cost, the VNS battery replacement projection, the ceiling refund, and the final cost after indemnity and tax credit.
This is a cost-planning estimate based on 2026 Korean rules, not medical advice. Public single-price tables do not exist, so the device, craniotomy, and total figures are defensible market-estimate ranges that vary with hospital, device brand, and surgical extent; exact benefit codes and fees should be confirmed with the hospital and the Health Insurance Review and Assessment Service. Coverage also requires meeting clinical criteria (drug-resistant epilepsy uncontrolled by two or more anti-seizure drugs). Confirm details with the treating neurosurgeon, the neurologist, the insurer, and the hospital quote.
This calculator is based on Korean rules (2026 National Health Insurance covered fees, the drug-resistant epilepsy severe-intractable special case V279 at 10 percent for 5 years, the annual out-of-pocket ceiling, and Income Tax Act Article 59-4 medical expense tax credit with the severe-disease cap exemption). Figures are planning estimates, not medical advice, an insurer decision, or a hospital quote.