What a bulging disc at L4–L5 or L5–S1 is, the difference between a bulge and a herniation, why an MRI finding alone does not determine disability percentages, what is actually examined in an entitlement process, which documents record a functional restriction, and when the injury also touches on long-term care.
In short: what a bulging disc at L4–L5 is
The lumbar spine is built of vertebrae with discs between them — cartilage cushions acting as shock absorbers. The notation L4–L5 marks the disc between the fourth and fifth lumbar vertebrae, and L5–S1 the disc between the fifth lumbar vertebra and the sacrum. These are the two levels most commonly affected, because they carry most of the load.
A bulging disc means the disc protrudes slightly beyond its normal boundary, usually without a tear in the outer ring. It is a very common finding, and in a substantial proportion of cases it appears on imaging in people with no pain at all.
The most important conclusion on this page: an imaging finding is not a number that translates into percentages. Two people with the same description on an MRI can be in entirely different functional states — one carries on working and the other struggles to get out of bed.
Bulge, herniation and pressure on a nerve root: the differences
The terms often get mixed up, and it is worth knowing the basic distinction — both to understand the doctor's letter and to describe the condition correctly.
A bulging disc is a relatively moderate protrusion of the disc. A herniated or prolapsed disc describes a state in which the inner material of the disc breaks through the outer ring. In both cases the decisive question is the same: has pressure on a nerve root arisen, and what is the consequence of that pressure.
Where there is pressure on a nerve root at these levels, symptoms may include pain radiating into the leg, numbness, weakness in the foot or reduced reflexes. These are findings examined on neurological examination and sometimes by EMG, and they are far more significant than the wording of the report alone.
Why an MRI alone does not determine disability percentages
In entitlement processes — whether with National Insurance, with an insurance company or in another framework — the examination is not of the name of the finding but of its effect. What a person is unable to do, to what extent, and for how long it has continued.
So an imaging report describing a significant bulge, without documentation of restricted movement, a neurological finding or impaired functioning, will carry limited weight. And conversely: a relatively moderate finding accompanied by continuous documentation of pain, treatment, restriction and an inability to perform particular activities presents a far stronger picture.
It is also important to remember that disability percentages are determined in a formal process, by a panel, according to the list of impairments in the regulations. No website, calculator or article can tell a particular person how many percentages they will receive — including this page.
What does record a functional restriction
If the aim is for the picture to be presented in full, the documents should address not only the finding but what it causes. The list below is a general direction, not a promise of an outcome in any process.
- An orthopaedic or neurological examination recording ranges of movement and restrictions
- Documentation of neurological findings — weakness, reduced sensation, altered reflexes
- A sequence of treatment: physiotherapy, injections, pain relief, surgery if there was any
- Documents describing the effect on standing, sitting, walking, lifting and sleep
- Documentation of absences from work or a change in fitness for work
- A sequence over time rather than a single document written in advance of a panel
When the injury also touches on long-term care
In most cases a bulging disc is not a long-term care matter. It is assessed on disability and work injury routes, not on the long-term care route.
There are, however, situations — mainly in older age or after a significant injury — in which the spinal damage leads to a broader functional decline: difficulty rising from a bed or a chair, an inability to get into the shower safely, needing help with dressing or dependence on a walking frame inside the home.
Where that is the position, the question is no longer "how many percentages" but whether dependency in daily activities exists. That is exactly the question examined in the National Insurance dependency assessment and in the definition of a long-term care condition in insurance policies — and these are entirely separate routes, with their own forms and processes.
What Pele Yoetz does and does not do
Pele Yoetz specialises in long-term care insurance claims and in checking long-term care entitlement. We do not represent anyone before disability panels, we do not determine disability percentages and we do not work on work injuries.
Where an orthopaedic injury has led to a functional decline justifying a long-term care assessment — mainly in an older person — that is exactly the point at which you can approach us for an initial check. On any other route we will point you to the appropriate body.
The information here is general and does not constitute medical or legal advice. Diagnosis, treatment and medical decisions are made by a qualified medical professional only.
Frequently asked questions
How many disability percentages do you get for a bulging disc at L4–L5?
There is no fixed figure. The percentages are determined by a medical panel according to the list of impairments and in accordance with the documented functional effect — restricted movement, neurological findings and impaired functioning — not by the name of the finding on imaging.
What is the difference between a bulging disc and a herniated disc?
A bulge is a protrusion of the disc beyond its normal boundary, usually without a tear in the outer ring. In a herniation the inner material breaks through the ring. In both cases the decisive question is whether pressure on a nerve root has arisen and what its consequence is.
Is an MRI finding enough to obtain a disability award?
No. An imaging report without documentation of restricted movement, a neurological finding or impaired functioning will usually carry limited weight. What is examined is the effect in practice.
What is the difference between L4–L5 and L5–S1?
These are two adjacent levels in the lumbar spine — the first between the fourth and fifth lumbar vertebrae, the second between the fifth and the sacrum. Both carry heavy load and so are commonly affected, and the consequence is determined by the neurological finding and by functioning.
Can a bulging disc give rise to long-term care entitlement?
In most cases no. A long-term care policy is assessed on dependency in daily activities or a need for supervision. If the injury has led to a broad functional decline — difficulty rising, bathing or dressing — it is worth checking that separately.
Does Pele Yoetz handle orthopaedic disability claims?
No. We focus on long-term care insurance claims and on checking long-term care entitlement. On disability and work injury routes we will point you to the appropriate body.
Official sources for further checking
This is general information and does not replace personal medical, legal or insurance advice. Eligibility is determined by the documents and rules that apply to each case.
