Short answer: if you were injured at work in California, the workers’ compensation insurer must pay for all medical treatment reasonably required to cure or relieve the effects of the injury, for as long as you need it, with no deductible, no co-pay and no dollar cap. Treatment usually goes through the employer’s medical provider network, every request is screened by utilization review against state treatment guidelines, and a denial can be appealed through independent medical review within 30 days. The rules below decide whether you actually get the care your doctor recommends. Abdi & Associates, Inc. represents injured workers in treatment disputes throughout California.
What treatment workers’ compensation covers
Labor Code section 4600 requires the employer, through its insurer or claims administrator, to provide medical, surgical, chiropractic, acupuncture and hospital treatment, including nursing, medicines, medical and surgical supplies, crutches, and other apparatus such as prosthetics and hearing aids, that is reasonably required to cure or relieve the injured worker from the effects of the injury. That includes emergency care, diagnostic testing, surgery, physical and occupational therapy, mental health treatment, pain management, durable medical equipment, home health care when a physician prescribes it, and reimbursement for mileage and other reasonable expenses of getting to treatment. Interpreter services are provided when needed. There is no lifetime dollar limit; the limits are the medical necessity rules described below.
Who decides where you treat
Medical provider network (MPN)
Most California employers and insurers use a medical provider network, a group of physicians approved by the Division of Workers’ Compensation (Labor Code section 4616). The employer arranges the first visit with an MPN physician. After that first visit you may choose any physician in the network as your primary treating physician, and you may change MPN physicians when you are dissatisfied. If you disagree with an MPN doctor’s diagnosis or treatment plan, you are entitled to a second and a third opinion from other MPN physicians and then to an independent medical review of the dispute. The MPN must give you written notice of these rights; if it fails to, or if the network does not have the specialists you need within the required distance, treatment outside the network may be allowed.
No MPN
Where the employer has no MPN, the employer controls treatment for the first 30 days after the injury is reported, and after 30 days you may treat with any physician of your choice (section 4600(c)). Some employers instead contract with a certified health care organization (HCO), which controls treatment for 90 or 180 days depending on your health coverage (section 4600.3).
Predesignating your own doctor
You can keep your personal physician as your treating doctor for a work injury if, before the injury, you gave your employer written notice naming the physician or medical group, you had group health coverage for non-work injuries on the date of injury, and the physician agreed in advance to be predesignated (section 4600(d)). DWC Form 9783 is used for the notice. Predesignation must be done before the injury; it cannot be done afterward.
Getting treatment while the claim is being investigated
Once you file the DWC-1 claim form, the claims administrator must authorize medical treatment within one working day and must pay for treatment, up to $10,000, while it investigates the claim, even if it later denies the claim (section 5402(c)). The administrator has 90 days to accept or deny; if it does nothing, the injury is presumed compensable. If the claim is denied, treatment can often continue on a lien basis, meaning the doctor treats you and later collects from the insurer if the claim is found compensable, and the doctor may not bill you for treatment of a work injury (section 3751).
Treatment guidelines: the MTUS
Treatment must be consistent with the Medical Treatment Utilization Schedule (MTUS), the evidence-based guidelines adopted by the Division of Workers’ Compensation under Labor Code section 4604.5 and updated regularly. The MTUS covers most common work injuries and includes guidelines for chronic pain, opioids, acupuncture, and post-surgical rehabilitation, and it incorporates a drug formulary. A treating physician who recommends care that goes beyond the guidelines must support the request with medical evidence showing why the variance is reasonably required. Physical therapy, occupational therapy and chiropractic care are each limited to 24 visits per injury unless the claims administrator authorizes more in writing, and post-surgical rehabilitation under the MTUS is exempt from that cap (section 4604.5(c)).
Utilization review
Every treatment request goes to utilization review (UR), the insurer’s process for deciding whether requested care is medically necessary under the MTUS (section 4610). A physician reviewer must make the decision. For a standard request, UR must decide within five working days of receiving the request for authorization, or up to 14 days if more information is reasonably needed; an expedited review, for treatment where delay would seriously jeopardize the worker’s health, must be decided within 72 hours. A UR decision that is late or that is made without the required information can be challenged before the Workers’ Compensation Appeals Board. Once treatment for a condition has been authorized, the insurer generally cannot re-review the same course of treatment for twelve months unless there is a change in circumstances.
Independent medical review
If UR denies, delays or modifies a treatment request, the worker’s remedy is independent medical review (IMR), a review by an outside physician arranged by the state (sections 4610.5 and 4610.6). The IMR application must be submitted within 30 days of the UR decision, using the form attached to the denial. The IMR decision is binding on the insurer, and the worker can only appeal it to the Appeals Board on limited grounds such as fraud, conflict of interest or a plainly wrong decision. Missing the 30-day window usually means the denial stands until a new request is submitted, so every UR denial should be reviewed immediately.
Working during recovery
Your treating physician decides what work you can do while you recover and puts the restrictions in a written report. If the employer offers work within those restrictions, you generally must accept it or lose temporary disability benefits; if the employer has no work within the restrictions, temporary disability continues. The doctor, the employer and, if you have one, your lawyer should review the actual job duties before you are returned to work, and any change in your condition should be reported to the doctor so the restrictions are updated.
Common medical benefit disputes
- the insurer schedules the first visit with a doctor who minimizes the injury and returns you to full duty;
- surgery, MRI or specialist referrals are denied by UR as not medically necessary;
- the claim is accepted for one body part and treatment for another is refused;
- pharmacy denials under the formulary;
- home health care, transportation or interpreter services are refused;
- future medical care is closed out in a settlement for less than it will cost;
- a claim is denied altogether and no one will treat you.
Each of these has a specific remedy: changing physicians within the MPN, a second or third opinion, an IMR application, a qualified medical evaluator to address the body parts in dispute, a petition for penalties when benefits are unreasonably delayed (section 5814), or an expedited hearing before a workers’ compensation judge on the treatment dispute (section 5502(b)).
How Abdi & Associates can help
Abdi & Associates, Inc. represents injured workers throughout California in medical treatment disputes and every other part of the workers’ compensation claim. We track requests for authorization and UR deadlines, file IMR applications on time, obtain qualified medical evaluations when the treating doctor’s reports understate the injury, and make sure that future medical care is properly valued before any settlement. We work remotely, so consultations and case handling are done by phone, video and secure electronic signature from anywhere in the state. Attorney fees are set by the workers’ compensation judge and paid from the award, not up front. Call (888) 772-2529 or, in Spanish, (323) 310-4264.
Frequently asked questions
Can I see my own doctor for a work injury?
Only if you predesignated the doctor in writing before the injury and meet the other requirements, or if your employer has no MPN and 30 days have passed. Otherwise you choose among the doctors in the employer’s network after the first visit.
How long does workers’ compensation pay for medical treatment?
For as long as the treatment is reasonably required to cure or relieve the injury, including for life in serious cases. A compromise and release settlement can close future medical care in exchange for money, which is why the value of future care must be estimated carefully before settling.
What do I do when a treatment request is denied?
File the IMR application within 30 days of the denial, ask the treating doctor to submit additional medical evidence, and, if the denial is procedurally defective, raise it before the Workers’ Compensation Appeals Board.
Do I have to pay medical bills myself if the insurer refuses?
No. A provider may not bill an injured worker for treatment of a work injury. Disputed bills are resolved between the provider and the insurer, often through a lien in the workers’ compensation case.
Related pages
- Los Angeles workers’ compensation attorney
- Denied workers’ compensation claims
- Permanent disability benefits
- Workers’ comp for physical injuries
- Compensable consequence injuries
Sources: Cal. Lab. Code §§ 3751, 4600, 4600.3, 4604.5, 4610, 4610.5, 4610.6, 4616, 5402, 5502, 5814; Cal. Code Regs., tit. 8, §§ 9767.1 et seq. (MPN), 9792.20 et seq. (MTUS), 9792.6 et seq. (utilization review); DWC Form 9783.
Reviewed by Shawn Abdi, Esq., Abdi & Associates, Inc. Last reviewed: September 4, 2026. Attorney advertising. This page is general information, not legal advice about your specific situation. Legal deadlines have exceptions; confirm the deadlines that apply to your case with a lawyer.