Low-back fusion through the back with a spacer (cage) in the disc space: combined (22633) or interbody only (22630). Screws (22840), cage (22853) and bone graft (20930/20936) are billed as add-ons. Every bill that usually comes with it, who sends it, and where each number comes from.
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Partial estimate. Add-on codes often billed with it (22634, 22632, 22840, 22853) are not included. The totals below run low.
| Bill | Surgery center | Hospital outpatient | Hospital stay |
|---|---|---|---|
| Facility | $20,841 | $27,722 | $24,085 |
| Surgeon | $1,700 | $1,700 | $1,700 |
| Assistant | $272 | $272 | $272 |
| Anesthesia | $437 | $437 | $437 |
| Before surgery (typical) | $249 | $249 | $249 |
| After surgery (typical) | $40 | $40 | $40 |
| Total | $23,540 | $30,420 | $26,783 |
National Medicare amounts (payment-area and wage adjustments at 1.0). Facility: OPPS Addendum B, July 2026 (national unadjusted rate); local = rate × (0.6 × wage index + 0.4); ASC Addendum AA, July 2026 (national rate); local = rate × (0.5 × wage index + 0.5); device-intensive (J8) codes keep the device portion unadjusted; FY 2027 IPPS final rule CMS-1849-F as corrected by CMS-1849-CN (91 FR 61328), Table 5 (effective Oct 1, 2026); standard amounts from Tables 1A-1E; local = weight × (labor × wage index + non-labor + capital × wage index^0.6848). Leaves out teaching (IME), safety-net (DSH) and outlier add-ons. Surgeon: CMS Physician Fee Schedule CY2026 (RVU26D). Anesthesia: CMS base units × the CY2026 anesthesia conversion factor, with an assumed case time. An educational estimate, not a quote.
At national Medicare rates for 2026, the whole lumbar fusion with cage (TLIF/PLIF) comes to about $23,540 in a surgery center and about $30,420 in a hospital outpatient, counting the facility, the surgeon, anesthesia and typical care before and after. Commercial plans usually pay more; local rates differ by area.
The surgery center bills for the facility; the surgeon's group bills for the operation (Surgeon, CPT 22633, about $1,700 from Medicare nationally); the anesthesia group bills by base units plus time (about $437 at our default time); labs, imaging, pathology and therapy each come from their own provider.
90-day global: the fee covers the operation plus the visit the day before and routine follow-up visits for 90 days.