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How Much Does Workers' Comp Pay for Knee Surgery in California?
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By Eman Yazdchi, Esq. · Certified Specialist in Workers' Compensation Law, State Bar of California Board of Legal Specialization · Cal Bar #285231
Workers asking about knee surgery pay are really asking four questions. Who pays the surgeon? What replaces lost wages during recovery? What is the lasting impairment worth? Is future knee treatment covered after settlement?
California law answers each question differently. The carrier pays authorized medical providers directly. Temporary disability replaces wages at two-thirds of pre-injury earnings. Permanent disability is a formal rating based on the final medical report. Future medical is either preserved in a Stipulation or bought out in a Compromise and Release.
Below: how each benefit type works. What affects the PD rating. Why closing future care too early can cost more than the settlement gains.
How does workers' comp pay for the knee surgery itself?
When the insurer authorizes knee surgery, the carrier pays the surgeon, hospital, and anesthesiologist directly. The worker does not pay out of pocket for authorized care.
Under Labor Code 4600, the employer must provide all needed care. That care must cure or relieve the work injury. For a knee claim, that includes imaging, specialist visits, and surgery. The treating physician documents the medical necessity. When UR approves the surgery, the carrier pays the providers directly. Payment follows the workers' comp fee schedule.
Take a supermarket stocker who tears an ACL loading pallets. That worker should not receive a surgical bill. Not if the injury is accepted and the surgery is approved. The worker's obligation is to attend authorized appointments and follow the treatment plan. The carrier's obligation is to pay for it.
If UR denies the surgery, the worker has 30 days to request IMR. IMR is free to the worker. A well-documented IMR packet addressing the MTUS criteria for knee surgical candidacy wins most reviews.
What wage replacement is available during knee surgery recovery?
Temporary disability under Labor Code 4653 pays two-thirds of lost wages. The state maximum rate applies. The benefit runs while the treating physician certifies you cannot do your regular job. It also runs when the employer cannot provide work within your medical restrictions.
TD starts when the treating physician issues work status slips documenting total or partial disability. Take a postal carrier who cannot walk a route after knee surgery. Total temporary disability pays two-thirds of pre-injury weekly earnings, up to the state maximum. If the employer offers light duty within the restrictions, TD may reduce. It depends on the wage difference.
The treating physician's work status notes are the foundation of the TD claim. Vague notes that say only 'light duty' give the insurer room to argue. Without specific limits, the insurer can claim the worker can return to full duty. Notes that specify standing limits and walking limits protect the TD benefit. Stair and ladder restrictions and weight limits matter too. Clear notes prevent premature return-to-work arguments.
What is the permanent disability rating for a knee injury?
Permanent disability is rated after the worker reaches maximum medical improvement. The rating is based on the treating or evaluating physician's impairment finding. The Permanent Disability Rating Schedule then applies.
When the condition stabilizes, the treating physician declares the worker Permanent and Stationary. That status means further treatment will not produce significant improvement. At that point, the physician issues a report rating the impairment. The rating uses the AMA Guides Fifth Edition. The WCAB Permanent Disability Rating Schedule converts that impairment to a percentage. The percentage determines the weekly PD benefit and how many weeks it runs.
Knee ratings vary widely depending on the final impairment. A meniscectomy with full return to prior motion may yield a low impairment percentage. A total knee replacement with significant motion loss and permanent restrictions may yield a substantially higher rating. The treating physician describes range of motion, stability, pain, and function. That report sets the starting impairment value.
Should I keep future medical care open or close it in settlement?
A Compromise and Release closes future medical care. It trades treatment rights for a lump sum. For knee injuries with ongoing needs, a Stip preserving open medical care is often worth more over time.
The decision depends on the expected future treatment. A worker with a full recovery and minimal ongoing needs can reasonably consider a C&R. A worker likely to need future knee replacement should evaluate those costs before closing medical. The same applies to periodic injections, physical therapy, and pain management. Closing future medical too early shifts those costs to the worker permanently.
Past results in workers' comp cases are not a reliable predictor of future settlement values. Every claim has different wages, different impairment findings, different disputed issues, and different apportionment considerations. The right approach is to build a clean medical and wage file. That way, each benefit type is counted accurately.
Injured at work? Call (661) 273-1780
Tap to call →How Yazdchi Law Handles Knee Surgery Claims
A knee surgery claim has multiple moving parts. Yazdchi Law tracks medical approvals, wage checks, and the PD rating. Nothing falls through the cracks.
Most workers see knee surgery claims as a two-part problem: get the surgery and recover. The workers' comp system adds a third part. That part is protecting every benefit. Carriers do not tell workers about open medical Stipulations. They do not explain PD rating implications of the treating physician's final report. An attorney does.
Eman Yazdchi is a Certified Specialist in workers' compensation law, certified by the California Board of Legal Specialization, State Bar of California. Yazdchi Law represents injured California workers in knee surgery claims, TD disputes, and settlement review.
For a case review, call (661) 273-1780.
Frequently Asked Questions
Does the carrier pay the surgeon directly for an authorized knee surgery?
Yes. When the surgery is authorized through UR and the carrier accepts the claim, the carrier pays the surgeon, hospital, and anesthesiologist directly through the workers' comp fee schedule. The worker does not receive a bill for authorized care. If the worker receives a bill for an authorized procedure, that is a billing error to report to the carrier immediately. Workers whose claims are disputed may receive bills if care was obtained outside the authorization process, but once the claim is accepted and the surgery is authorized, the carrier is financially responsible. Keep records of every authorized medical appointment. Those records support mileage reimbursement and document that you followed the treatment plan, which matters if the insurer tries to argue voluntary refusal of treatment.
How is temporary disability calculated during knee surgery recovery?
Temporary disability under Labor Code 4653 is two-thirds of the worker's average weekly wage at the time of injury, up to the state maximum rate. The maximum rate changes each year based on state wage data. The minimum rate also applies to avoid very low TD payments. TD is paid for the period the treating physician certifies the worker cannot return to regular duties and the employer cannot accommodate the restrictions. The calculation is based on earnings in the year before injury, typically documented through wage records and pre-injury pay stubs. Workers who return to light duty at a lower wage while recovering may receive partial TD for the wage difference. Clear, specific work status notes from the treating physician are essential to calculate partial TD correctly.
What permanent disability rating do knee injuries typically receive?
There is no typical rating. Knee ratings vary based on the impairment the treating or evaluating physician documents at Permanent and Stationary status. Range of motion loss, instability, atrophy, pain, and functional limitations all factor into the AMA Guides Fifth Edition impairment calculation. A meniscectomy with good recovery may result in a low impairment percentage. A total knee replacement with significant motion loss and permanent work restrictions produces a substantially higher rating. Apportionment to pre-existing arthritis under Labor Code 4663 can also reduce the industrial portion of the rating.
What if the insurer denies the knee surgery?
Request Independent Medical Review within 30 days of the UR denial. IMR is free to the worker and conducted by an independent physician applying MTUS criteria. The IMR packet should include the treating physician's RFA with MTUS citations, imaging showing the surgical lesion, and documentation of conservative care failure. If IMR overturns the denial, the carrier must authorize the surgery. If IMR upholds the denial, the treating physician can submit a new RFA with additional evidence. An attorney can coordinate the IMR packet and advise on supplemental options if IMR upholds.
Should I settle my case before or after knee surgery?
Generally, after. Settling before surgery closes the medical care obligation. Once a Compromise and Release is approved, the carrier has no further obligation to pay for the surgery. Settling before also makes it harder to value future medical care accurately because the surgical outcome and post-surgical treatment needs are unknown. The exception is a Stipulated Award, which can settle the indemnity portion while preserving open future medical. An attorney can structure a settlement that avoids closing future medical before surgery if that option is available.
What if the insurer says my knee injury is not from work?
That is an AOE-COE dispute: whether the injury arose out of and occurred in the course of employment under Labor Code 3600. Common insurer arguments include prior arthritis, off-duty activity, or pre-existing degeneration that predates the work event. AOE-COE disputes require a medical-legal evaluation by a Qualified Medical Evaluator or an Agreed Medical Evaluator. A QME report supporting industrial causation is typically the key evidence to overcome the insurer's denial. An attorney can help select the right AME or request a QME panel and guide the medical-legal process. Settling too early is one of the most common mistakes in knee surgery claims. An attorney can review the treating physician's final report, the PD rating, and the likely future medical before advising on when to settle.
Last reviewed by Eman Yazdchi, Esq., July 2026.
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