Oklahoma’s Workers’ Compensation Commission now lists the 2026 Medical Fee Schedule and 2026 rate tables ahead of the July 1, 2026 effective date. The schedule follows HJR 1023, which approved the updated maximum reimbursement rates and became law without the governor’s signature on May 13.
The reserve question is not whether provider bills change. It is whether open medical-only and lost-time files now need new unpaid medical estimates for services delivered after July 1. Surgery, physical medicine, imaging, and drugs administered in clinical settings are the places to start, because those categories can move case adequacy before the paid loss triangle shows a clean trend break.
Who it affects
Self-insured Oklahoma employers, public entities, group self-insurance programs, and captives with workers compensation exposure should review open Oklahoma claims still in active treatment. The most exposed accounts are construction firms, healthcare employers, manufacturers, transportation operators, schools, municipalities, and energy employers with lost-time files that include future treatment plans.
Multi-state employers should not treat this as a national medical trend update. Oklahoma claims with dates of service before July 1 belong under the old payment regime. Dates of service on or after July 1 belong under the new Oklahoma workers compensation fee schedule. Mixing those periods can blur the signal in bill review data, nurse case manager budgets, and the medical component of workers compensation IBNR.
The reserve mechanism: severity and case adequacy
Fee schedules affect reserves through severity, meaning the expected cost per claim, and through case adequacy, meaning whether the adjuster’s current estimate is enough for known future treatment. The change can reach open claims faster than it reaches actuarial paid development factors because bills get repriced claim by claim as they arrive. A paid triangle may need several months of post-July payments before the new level is visible.
That lag matters because Oklahoma’s statewide rate signal moved in the other direction earlier this year. NCCI’s Oklahoma filing summary for rates effective January 1, 2026 proposed a 4.7% decrease for voluntary loss costs and a 4.7% decrease for assigned risk rates. NCCI said the filing used policy years 2022 and 2023 valued as of year-end 2024, and that Oklahoma lost-time frequency and wage-adjusted indemnity and medical costs had trended downward since 2015.
The same filing also warned against reading the system as costless to monitor. NCCI said 2024 claim severity increased nationally for both medical and wage replacement components, with medical increases driven partly by inflation but mainly by greater utilization. It also noted that physician services account for more than 40% of all workers compensation medical services, while their cost rose only 1.5% over the prior three years.
For a self-insured employer, those two facts can coexist: the filed loss-cost benchmark can decline while open medical files still need a case reserve reset after a fee schedule update. The filed benchmark speaks to aggregate prospective insurance pricing. Open-claim reserve adequacy speaks to the actual treatment plan on known Oklahoma files.
What this means for your next review
At the next reserve study or interim monitoring meeting, ask for an Oklahoma split before and after July 1 by date of service, not only by accident date. Have the third-party administrator identify open Oklahoma claims with planned surgery, therapy, imaging, physician follow-up, or clinic-administered drugs, then compare current case reserves with the post-July bill review assumptions. If case reserves are strengthened across many files at once, ask your actuary whether the reported triangle needs a case reserve strengthening diagnostic before relying on standard development factors.
Ask your actuary
- Which open Oklahoma claims have future medical reserves priced under the old fee schedule?
- Should the next reserve review split Oklahoma medical trend before and after July 1, 2026?
- Are case reserves or development factors more credible for Oklahoma claims still in active treatment?