MS and the NDIS: How a Fluctuating Condition Meets a Permanence Test

MS and the NDIS: how a fluctuating condition meets a permanence test

The NDIS is built on a word that does not obviously describe multiple sclerosis.

Section 24 of the National Disability Insurance Scheme Act 2013 requires an impairment that is permanent, or likely to be permanent. MS, for most of the 85% of people diagnosed with the relapsing-remitting form, is the opposite of permanent in any everyday sense. Symptoms arrive, then partly or fully go. A person can be unable to walk across a room in March and back at work in May. Function varies not just year to year but hour to hour, with heat, with fatigue, with an infection, with how much they did yesterday.

This creates the single biggest practical problem MS presents to the NDIS, and it produces two opposite failures. Some people with MS never apply, because they have been told — or have concluded — that a condition which comes and goes cannot meet a permanence test. Others apply and are assessed on a good day, by someone who sees a person walk unaided into a room and answer questions fluently, and are refused.

Both failures are avoidable, because the NDIS has actually addressed this directly. This guide sets out what the rules say and how to build an application that survives them.

For general eligibility mechanics, our NDIS eligibility guide and what to do if you are found ineligible cover the ground. What follows is specific to MS.

What the guidelines actually say about fluctuating conditions

This is the passage worth knowing, and it is worth quoting to anybody who tells you otherwise. The NDIS operational guideline on whether you meet the disability requirements states that an impairment can still be permanent “due to the overall impact on your life.”

The guideline expressly contemplates impairments that are episodic or that fluctuate in intensity. It says that periods of milder impact do not rule out permanence, and that an impairment whose effects change over time can still be permanent.

In other words: permanence is assessed across the whole arc of a person’s life, not by how they present on a Tuesday. That is the rule, in the agency’s own words, and it is the foundation of every MS access request.

The treatment exception, and why DMTs do not defeat an MS application

There is a second passage that matters more than most people realise, and it cuts both ways.

The guideline says permanence can be ruled out where known, available, appropriate, evidence-based treatment is likely to remedy the impairment. On its face, that is a problem for MS: disease-modifying therapies are certainly known, available and evidence-based, and 62% of Australians with MS — 23,217 people — are on one.

But the guideline goes on to deal with degenerative conditions specifically: for those, the impairment counts as permanent if treatment will not cure it or come close to removing its effects.

That is the argument, and it should be made explicitly in an access request. Disease-modifying therapy in MS reduces relapse frequency and new lesion formation. It does not repair existing axonal damage, it does not restore lost function, and in progressive disease its effects are modest at best. A person on ocrelizumab with an established walking impairment and persistent fatigue has an impairment that available treatment is not going to remedy. Saying so in those terms, supported by the neurologist, closes off a line of refusal before it opens.

Where MS sits on the lists

The NDIA maintains two administrative lists. List A is conditions likely to meet the whole disability test. List B is conditions likely to result in permanent impairment — a narrower finding that settles permanence only, leaving functional capacity to be established separately.

MS is not on List A. It falls within List B’s territory of conditions primarily resulting in neurological impairment. The practical consequence is the same as for several other conditions we have written about: the diagnosis does useful work on permanence and no work at all on function. An application consisting of a neurologist’s letter confirming MS and an MRI report is not an application. It is a diagnosis.

What the NDIA will look at closely is the second limb of section 24: substantially reduced functional capacity.

The six domains, and which ones MS hits

The Act requires substantially reduced functional capacity in at least one of six areas: mobility, communication, social interaction, learning, self-care and self-management. The plain-language guideline groups self-care and self-management together, which is why you will sometimes see five listed rather than six.

For MS, the domains that usually carry an application are mobility, self-care and self-management — and the last of these is the one most consistently undersold.

Self-management covers the capacity to make and act on decisions, organise one’s life, manage a budget and a household, plan, initiate and sequence. In MS this is attacked from two directions that an assessor may not connect: cognitive change, which affects processing speed, working memory and executive function in a large proportion of people, and fatigue, which does not reduce ability so much as reduce the number of hours per day in which ability is available.

Both are invisible. Both are routinely left out of applications because the person applying does not think of them as disability — they think of them as being tired and a bit forgetful. We have written them up separately in MS fatigue, heat sensitivity and MS and cognitive change in MS, and getting them into the application properly is probably the highest-value thing in this guide.

The statutory test is also broader than most people use. “Substantially reduced” is met where a person cannot do the activity, or cannot do it without assistance, or cannot do it without assistive technology or home modification, or can only do it with significantly more time and effort.

That final limb is written for conditions like MS and almost nobody invokes it. A woman who can shower, dress and make breakfast — but needs ninety minutes to do it, has to sit down twice, and is too depleted afterwards to do anything else before midday — satisfies the test on time and effort alone. The application should say exactly that, in those numbers.

The good day problem, and how to beat it

Here is the mechanical difficulty. An assessment is a snapshot. MS is a distribution.

Worse, there is a selection effect working against applicants: a person with MS who is having a bad week is likely to reschedule the appointment. Which means assessments are systematically conducted on better-than-average days, by people who then record what they saw.

Four things fix this.

1. Keep a symptom and function diary before you apply

Not a feelings journal. A record, ideally over eight to twelve weeks, of specific functional facts:

• hours slept, and whether sleep was broken
• what you were able to do each day, and what you had to abandon
• time taken for routine tasks, in minutes
• mobility that day — distance walked, aids used, falls or stumbles
• any day spent largely in bed, and why
• bladder episodes, including urgency and any accidents
• the temperature, when heat was a factor
• cognitive events — losing a word, losing a thread, an error at work

This is the single most powerful document in an MS application, because it converts “it varies” into a measurable distribution with a worst case, a best case and a frequency. Twelve weeks of entries showing nine days largely in bed, a median shower time of 40 minutes and four falls is not an impression. It is evidence.

2. Get your assessments to describe the range, not the day

Ask the occupational therapist, physiotherapist and neurologist explicitly to document your worst reasonable function as well as your current presentation, and to state the frequency of each. The wording that helps looks like this:

“On presentation, Ms X walked 60 metres unaided. She reports, and her diary records, that on approximately one day in four she is unable to walk beyond the bathroom and requires assistance with showering and dressing. Her function is heat-dependent and deteriorates markedly above 26°C. The assessment below reflects her better-day capacity and should not be taken as representative.”

A report that says only what happened in the room is a report that will be read as the whole picture.

3. Use the relapse history

Relapses are documented events, and documented events are persuasive. Collect the dates, the symptoms, what treatment was given, how long recovery took, and how much function did not come back. A history showing four relapses in three years, each requiring intravenous methylprednisolone, with incomplete recovery after two of them, demonstrates both the episodic pattern and the accumulating deficit — which is precisely the combination the guideline’s “overall impact on your life” language is designed to capture.

4. Have someone else write a statement

A partner, adult child, housemate or close friend describing a bad week in concrete detail is often more effective than any clinical report, because it covers the hours nobody clinical ever sees. Clinicians see people in clinics. Nobody clinical has watched someone sit on the shower floor.

What the Australian data says about MS applications

MS Australia’s 2025 prevalence and health economic impact report includes NDIS figures that are unusually useful, because they tell you what normal looks like.

Three observations.

Reassessed plans are worth about $13,000 more than initial plans. Read that as a pattern rather than a coincidence. Initial MS plans are commonly built on incomplete evidence, and they get corrected once the person has lived under the plan, discovered what is missing, and come back with better documentation. If your first plan feels thin, that is the median experience, not a personal failure.

23.4 hours is the average effort, with a standard deviation of 38. That spread tells you some people spend a working week on this. Knowing in advance that it is a substantial piece of work — and that assembling a diary and good reports is the bulk of it — is better than discovering it at the deadline.

89% of eligible people with moderate to severe disability have applied, which is a high take-up rate. The gap is at the milder end, where people with real functional impairment assume they will not qualify and never try. Notably, 56.8% of plan holders had moderate to severe disability, against 20.0% of those without a plan — meaning plenty of people with mild to moderate MS do hold plans.

The 2026 and 2027 changes to put in the diary

Several announced changes land soon and they affect MS plans more than most, because MS plans lean heavily on therapy and support coordination rather than on nursing.

From 1 October 2026 (new and reassessed plans) and 1 February 2027 (on renewal): Specialist Support Coordination and Capacity Building Choice and Control allocations reduced by up to 50%, and Capacity Building Daily Activities by around 10%. A protected supports list applies.

From 1 December 2026: the claim window shortens to 90 days, down from two years. This matters most for self-managed and part-self-managed participants, and for anyone who lets invoices accumulate.

From 1 January 2027: unregistered providers delivering support coordination face a 10% rate reduction and de-indexation.

The practical response for an MS plan is to treat reassessment preparation as an evidence exercise rather than a form. Document what the therapy and coordination funding achieved — relapse recovery, a return to work, a fall rate that dropped, hours of care avoided. Outcomes are the argument against a reduction.

What an MS plan should actually contain

Patterns worth checking your plan against.

Allied health that reflects an episodic condition. Therapy in MS is not a steady weekly drip. It is bursts — intensive rehabilitation after a relapse, then maintenance. A plan with a flat weekly physiotherapy allocation and no capacity to surge after a relapse is the wrong shape. At 2026–27 price limits, physiotherapy is $183.99 per hour, occupational therapy and speech pathology $193.99, exercise physiology $161.99, psychology $252.99, dietetics $178.99 and podiatry $188.99.

Exercise physiology, specifically. The evidence for exercise in MS is among the better-supported non-drug interventions, and exercise physiology at $161.99 is cheaper than most alternatives.

Cooling as assistive technology. 90% of people with MS report heat sensitivity, and Australian MS Longitudinal Study data found people with MS spend about ten times as much on air conditioning as the average household. Cooling vests, portable cooling and air conditioning are legitimately assistive technology and home modification questions, not lifestyle costs. This is an underclaimed category.

Home modifications planned against progression, not current state. For someone with secondary or primary progressive MS, modifications approved today will be in place for years. The occupational therapy assessment should consider trajectory. Modifications take a long time to fund and build.

Support that can flex. The hardest thing to get and the most necessary: a plan that funds more support during a relapse without a fresh application. Discuss this with the planner explicitly, and ask how an unscheduled reassessment on change of circumstances would work in practice.

Psychology. Depression affects around 45% and anxiety around 42% of working-age Australians with MS, roughly twice general population rates. A plan with no mental health allocation is a plan with a predictable gap.

Continence support where relevant. Bladder and bowel symptoms are extremely common and badly under-discussed. Where catheterisation or bowel care is involved, those are high intensity supports with specific worker competency requirements — see our high intensity supports guides.

If the answer is no

The pathway and the clocks:

Internal review under section 100, requested within 3 months of the decision, with the NDIA required to decide within 90 days. For MS, the overwhelming majority of refusals we see come down to functional evidence that described a good day. Use the three months to build the diary and get reports rewritten to describe the range.

Administrative Review Tribunal, which replaced the AAT on 14 October 2024, within 28 days of the internal review decision. No application fee for NDIS matters, and the Commonwealth funds free NDIS Appeals advocacy. Contact an NDIS Appeals provider through a disability advocacy service before paying anyone.

Most ART matters settle before hearing, often because lodging the appeal is the first time the whole file gets read as a whole.

One specific thing to check if you were refused

Look at whether the decision reasons rely on your presentation at a single assessment, or on treatment being likely to remedy the impairment. Both are answerable — the first with the guideline’s own language about episodic and fluctuating impairments and overall life impact, the second with the degenerative-condition carve-out and a neurologist’s statement that disease-modifying therapy will not restore lost function.

If the reasons say something like “you were observed to mobilise independently,” that is a snapshot being used as a distribution, and it is the most common reversible error in MS access decisions.