You may see this phrase in an ER note, MRI report, workers' comp paperwork, or an insurance letter saying you have a "disc herniation at L4-L5" or "cervical herniated disc." It means one of the spinal discs - the cushion between the bones of the spine - has pushed outward or ruptured enough to press on nearby nerves or the spinal canal. That can cause back or neck pain, numbness, tingling, weakness, or pain that shoots into an arm or leg. People also call it a slipped disc, though the disc usually has not "slipped" out of place.

This wording matters because insurers often try to blur the line between a painful injury and "normal wear and tear." A herniated disc can happen after a crash, a fall, or heavy lifting, but they may argue it was preexisting or age-related, especially if imaging shows degenerative disc disease too. The timing of symptoms, prior records, and the exact MRI language can make a big difference.

For an Arizona injury claim, a herniated disc may raise the value of damages if it leads to ongoing treatment, injections, surgery, missed work, or permanent limits. Arizona follows pure comparative fault under A.R.S. § 12-2505, so even if a crash happened during a haboob pileup on I-10 and you were partly at fault, you may still recover compensation - just reduced by your share of fault.