Neck and cervical spine injuries

For injuries on or after January 1, 2013, Labor Code § 4660.1(b) builds the rating on the AMA Guides to the Evaluation of Permanent Impairment, 5th Edition, with your whole person impairmentWPI — Whole Person Impairment The percentage from the AMA Guides that a rating is built from. Extremity percent is not whole person percent: 100% upper extremity = 60% whole person, 100% lower extremity = 40%. This is the most common source of confusion in a rating. “multiplied by an adjustment factor of 1.4.” The spine is Chapter 15, and, as our low back page explains, it has two methods.

The DRE method is the default for a distinct injury. The evaluator places you in one of five categories based on clinical findings: what the examination shows, not what the MRI shows. Every category is a range, and where you land inside it depends on how the injury affects your activities of daily living. The cervical spine has its own table in Chapter 15, separate from the lumbar one, and we do not reproduce its values here. Do not read the lumbar ranges on our low back page as neck numbers.

The Range of Motion method is required, not merely permitted, in specific circumstances. They are the Chapter 15 rules our low back page walks through: fractures at more than one level; radiculopathy on both sides, or at more than one level in the same region; alteration of motion segment integrity at more than one level, which includes a multi-level fusion; recurrent herniation or stenosis with radiculopathy, or recurrent radiculopathy at the same level; and impairment not caused by an injury. Where both methods genuinely apply, the higher rating governs.

THE NEGATIVE RULE

A cervical MRI that reads “multilevel degenerative changes” does not get you the ROM method. Bulges, degeneration or herniations at several levels, without radiculopathy at more than one level, do not trigger it. A multi-level fusion, multi-level fractures or multi-level radiculopathy does.

The 2005 Permanent DisabilityPD Permanent Disability. Compensation for lasting impairment. A different and much lower weekly rate — 2026 maximum $290/week. Rating Schedule numbers every spine impairment. The cervical spine is region 01.

A ROM rating stacks components, and the nerve deficits get lines of their own, which are then combined. So a single 15.01.01.00 line after a two-level fusion is a visible problem on the face of the document. How to read the rest of the string.

WHEN THE SPINAL CORD IS INVOLVED

Most neck claims involve a nerve root, the nerve leaving the spine for the arm. Where the spinal cord itself is involved, Chapter 15 has a separate route, the corticospinal tract lines above, and they reach things a neck examination may never ask about. If you have symptoms in both hands, trouble with balance, or bladder or bowel changes since the injury, raise them. An axis nobody evaluates contributes nothing. How those axes work.

In the DRE method the line that matters is the one our low back page draws: radicular complaints that cannot be verified on one side of it, and a radiculopathy the examination verifies on the other. The verifying signs it lists are dermatomal pain or sensory loss, loss of a relevant reflex, loss of muscle strength, and measured atrophy. They have to be found at the examination and written down. An MRI showing a disc pressing on a nerve root is not, by itself, a verified radiculopathy.

Nerve studies go through review. Some treatment in the first 30 days after an injury can proceed without utilization reviewUR Utilization Review. The process that approves, modifies, or denies each treatment request. A modification is a denial of what it left out., but not “electrodiagnostic medicine, including, but not limited to, electromyography and nerve conduction studies” (8 CCR § 9792.9.7(b)). The same list holds imaging other than X-rays, spinal injections including epidurals, and non-emergency surgery.

NECK, WRIST, OR BOTH

Numbness in the hand can come from a nerve root in the neck or from a nerve compressed at the wrist or elbow, and the two are rated in different chapters. For the wrist, as our carpal tunnel page explains, normal electrodiagnostic testing does not permit a diagnosis of nerve compression for rating purposes. If both are present, both belong in the rating, as separate body parts that are then combined. Ask the evaluator to say which it is, and why.

Approval runs through utilization review. A prospective decision is due within five business days of a complete request, or 72 hours on expedited review. Only a licensed physician may modify or deny for medical necessity. A denial binds for 12 months as to the same treatment from the same physician or practice group, unless a new request documents a change in the facts.

The yardstick is the MTUSMTUS Medical Treatment Utilization Schedule. California’s treatment guidelines. Four of them — shoulder, elbow, hand/wrist/forearm and traumatic brain injury — were replaced January 2, 2026. Cervical and Thoracic Spine Disorders guideline (ACOEM, October 17, 2018), listed by the DWCDWC Division of Workers’ Compensation, part of the Department of Industrial Relations. Administers the system. Information Services Center: 1-800-736-7401. under an Administrative Director order effective April 18, 2019. It is presumptively correct on the extent and scope of treatment, though rebuttable by a preponderance of the scientific medical evidence. Most surgery denials are documentation problems: the request has to show the conservative care that was tried and failed, with dates and outcomes.

Then IMRIMR Independent Medical Review. The appeal from a UR denial. 30 days (10 if the dispute is only over drugs on the MTUS Drug List).. You have 30 days after service of the decision, or 10 days in a drug-only dispute. If the denial came without the one-page form and addressed envelope that § 4610.5(f) requires, the clock has not started. IMR overturned 10.6% of surgery denials in 2025, according to the DWC’s 2026 IMR Report, so check the original review’s timing first: under Dubon II an untimely decision is invalid, and a judge decides medical necessity. What makes a denial invalid. · The IMR odds.

Before you settle: a fusion can require revision, and a Compromise and ReleaseC&R — Compromise and Release A lump sum that closes future medical treatment permanently. closes future medical treatment permanently. Why that matters.

Labor Code § 4656(c)(2): for an injury on or after January 1, 2008, temporary disability “shall not extend for more than 104 compensable weeks within a period of five years from the date of injuryDate of injury For a cumulative or occupational disease claim, the law sets it as when you first suffered disability and knew or should have known it was work-related — not when the wear began. Almost every deadline runs off this..” Neck injuries are not among the nine conditions in § 4656(c)(3) that get 240 weeks, and a fusion does not change that. The nine.

The statute has no exception for time spent waiting on a treatment dispute. Weeks off work while a fusion is denied, appealed and finally approved count against the 104 like any others, and so do weeks of temporary partial disability on modified duty. If surgery comes late in the window, plan around it. How the cap works.

A TYPICAL APPORTIONMENT PARAGRAPH

“Cervical MRI demonstrates multilevel spondylosis at C5-6 and C6-7, findings which are age-appropriate and pre-existed the industrial injury. I apportion 50% of the permanent disability to the pre-existing degenerative process.”

Labor Code § 4663(a): “Apportionment of permanent disability shall be based on causation.” The physician must state what approximate percentage of the permanent disability the injury caused and what percentage “other factors both before and subsequent to the industrial injury, including prior industrial injuries” caused. The employer is liable only for the percentage the injury directly caused.

We will be straight with you about Lindh. City of Petaluma v. WCABWCAB Workers’ Compensation Appeals Board. The court system that decides these cases. 23 district offices statewide. (Lindh) (2018) 29 Cal.App.5th 1175 is not a helpful decision for injured workers: a pre-existing condition that never caused symptoms can support apportionment. What the defense still has to show, on substantial medical evidence, is that the degeneration caused part of this disability, and under EscobedoEscobedo The en banc decision requiring an apportionment opinion to explain how and why. A percentage without reasoning is not substantial evidence. v. Marshalls the physician must explain how and why. An MRI finding plus a percentage is a conclusion, not reasoning.

The questions that decide it: were you doing your full job the day before? Did the evaluator review any pre-injury records? Does the report apportion disability, or just pathology? In City of Jackson the opinion held up because the physician apportioned disability causation, not injury causation. And why 50% rather than 20%? How apportionment works.

Prior claims. A prior award of permanent disability is conclusively presumed to still exist; as our low back page explains, the defendant bears the burden of proving the prior award and the overlap. And for the lifetime 100% cap on awards to one region in § 4664(c)(1), “the spine” is a single region: neck and low back together. If you have had a claim before.

If you were driving for work, on a delivery, a service call or an errand, the crash is a workers’ compensation claim. An ordinary commute generally is not, though the exceptions are real. Was I covered on my commute?

You likely have a second claim. Labor Code § 3852(a): “The claim of an employee … for compensation does not affect their claim or right of action for all damages proximately resulting from the injury or death against any person other than the employer.” Workers’ comp pays nothing for pain and suffering. A claim against the at-fault driver can, but it requires proving fault. The comp carrier will assert a lien on that recovery, the employer must bear its share of the cost of the recovery under Quinn v. State of California, and future benefits can be credited, so the two cases have to be handled together. Third-party claims. · After a crash at work.

“Whiplash” describes how it happened. It is not a rating category. A strained neck is rated on what the examination finds, like any other. Soft tissue is not the same as nothing: a worked example in the 2005 schedule itself is a cervical soft tissue lesion, 15.01.02.02, at 8% whole person impairment. It shows how a string is written, not what your neck is worth. The worked examples.

Report the neck even if it only started hurting the next morning, and name every body part that hurts. One that first appears months later gets argued about.

A neck does not need an accident. The law covers “repetitive mentally or physically traumatic activities extending over a period of time, the combined effect of which causes any disability or need for medical treatment.” Under § 5412 the date of injury is when you first suffered disability and knew, or should have known, that work caused it. It is not the day it started hurting. Cumulative trauma.

Overhead work loads the neck and shoulder together: table grapes above head height (agriculture), boom operators and grips (film and TV), trays at shoulder height (restaurants), top-bin picking (warehouses), high dusting (hotel housekeepers). Claim the shoulder too if it hurts.

So does head-down and fixed-posture work: a laptop on a kitchen table (office and remote work · working from home), a sewing machine (garment), a crane cab floor (port and longshore), a forklift in reverse (warehouses).

• Does the method fit the surgery? — Two or more fused levels require ROM. A single 15.01.01.00 line after a two-level fusion is worth checking.
• Was the radiculopathy verified at the examination? — Reflexes, strength, sensation and atrophy written down, not just an MRI finding.
• Both hands, balance, bladder or bowel? — Those belong on the corticospinal tract lines, and nobody rates them unless they are raised.
• Neck, wrist, or both? — Hand symptoms need a source. If it is both, it is two body parts.
• Does the apportionment explain how and why? — And does the records list include anything from before the injury?