Burnout in ICD-11: Diagnosis, Sick Leave and What It Means

In May 2019 one headline went around the world: "the WHO has recognised burnout as a disease". That was a misreading, and it is still being repeated. The eleventh revision of the International Classification of Diseases did describe burnout — and in the same passage said plainly that it is not an illness. Below: what the text actually says and what practically follows from it.

What the WHO actually did

The World Health Organization included burnout in ICD-11 as an occupational phenomenon. The definition: a syndrome conceptualised as resulting from chronic workplace stress that has not been successfully managed.

The key sentence sits in the same paragraph: burnout is not conceptualised as a medical condition. The classification describes a circumstance a person may bring to a doctor, not a disease they have. Plain words about the state itself are in the article on what burnout is.

Code QD85 and where it sits

In ICD-11 burnout carries the code QD85. The letter Q matters more than the digits: it points to the chapter "Factors influencing health status or contact with health services". That chapter gathers reasons for contacting healthcare that are not themselves diseases — from working conditions to life circumstances.

A direct consequence follows: there is no diagnosis called burnout. A clinician may record QD85 as a circumstance, but that is neither a disease diagnosis nor a statement about fitness for work. And no text, no questionnaire and no blood test can tell a person that this is what they have.

The three dimensions in the ICD-11 definition

The classification describes burnout through three dimensions:

All three concern work. That is not incidental: the text states separately that the term refers specifically to the occupational context and should not be applied to experiences in other areas of life. How the three dimensions look from inside is unpacked in the article on burnout at work.

What QD85 excludes

The exclusion list is the most practical part of the wording. QD85 excludes:

• mood disorders;
• anxiety and fear-related disorders;
• disorders specifically associated with stress, including adjustment disorder.

The logic is simple: if the picture fits one of those, that is what gets coded, not QD85. It also explains why the question "burnout or something else" cannot be closed on your own: research has drawn no reliable boundary between burnout and depression, and a text on the internet does not draw one either. The fork is handled honestly in the article burnout or depression.

Burn-out in ICD-10: code Z73.0

Before ICD-11 the classification had no dedicated line for burnout. The nearest was category Z73, "Problems related to life-management difficulty", which contains Z73.0 — burn-out. It sits in chapter Z, meaning exactly the same thing in substance: a factor influencing health status, not a disease.

So ICD-10 and ICD-11 point at the same state of affairs: the condition is described, but it never had, and still does not have, the status of an illness.

Sick leave and burnout: the honest answer

This part has to be said plainly rather than pleasantly. Burnout is not an illness, and on its own it does not serve as grounds for a certificate of incapacity for work. Promising otherwise would be untrue.

What is true and matters. First, people come to a doctor not with a code but with complaints: insomnia, heaviness in the body, low mood, anxiety. The doctor weighs the whole picture and may find a condition that is a diagnosis — and then the decision rests on that, not on the word "burnout". Second, assessing a mental state and making such decisions is something only a doctor can do in person; no service and no questionnaire does it or replaces it.

It follows that hunting for "a test that confirms burnout" to show someone is pointless: a systematic review checked thirty-eight candidate biomarkers, cortisol among them, and found none that worked. The laboratory serves the opposite purpose — ruling out states that produce the same picture.

Holidays, resignation and other decisions

The practical moves people ask about most often are not medical but occupational and personal: a holiday, a change of tasks, a conversation with a manager, resignation. Two things are worth holding in mind here.

First: a holiday almost always helps and almost always wears off — it changes the pause, not the conditions. Second: decisions taken at the bottom of exhaustion are rarely good ones; that the state is reversible without abrupt steps is the subject of the article on how to come out of burnout. The legal side — leave, notice periods, guarantees — belongs to employment-law specialists, not to medical texts.

What this means in practice

In short: the code exists, the diagnosis does not, and that changes the question. Instead of "how do I get a document", the useful question is "what exactly is spending the resource and what of it can be changed". For the same reason the attempt to work out "how far along this has gone" fails: no confirmed rungs exist — why, is unpacked in the article on the stages of burnout.

A quick reading of your own state comes from the short burnout test: six questions and one level from 0 to 100. The full burnout test scores state and the demands of the environment as two independent lines — a picture that is easier both to think with and to bring to an appointment.

The bodily part is worth checking separately: hypothyroidism (a shifted TSH), iron deficiency (low ferritin) and a lack of vitamin D produce the same picture and, unlike burnout, are fixable. What to look at is in the article on blood tests for emotional burnout; results you already have the service will help you read in plain language.

This article is informational, does not diagnose and gives no legal advice. Decisions about health and fitness for work are made by a doctor in person.