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Table 1 Grouping of long-term conditions according to the International Classification of Diseases (ICD-11)

From: Incidence of sick leave and disability pension in adults with musculoskeletal pain and co-occurring long-term conditions: data from the Norwegian HUNT study and national registries

ICD-11 Chapters

Long-term conditions included

Chapter V

 Endocrine, nutritional, or metabolic diseases

• Diabetes

• Obesity

• Hypercholesterolemia

• Hyperthyroidism

• Hypothyroidism

Chapter VI

 Mental or behavioural disorders

• Anxiety

• Depression

• Psychiatric problems

• Alcohol use disorders

Chapter VII

 Sleep–wake disorders

• Insomnia symptoms

• Apnoea

Chapter VIII

 Diseases of the nervous systems

• Chronic headache

• Migraine

• Epilepsy

Chapter XI

 Diseases of the circulatory system

• Hypertension

• Angina pectoris

• Myocardial infarction

• Heart failure

• Other heart diseases

Chapter XII

 Diseases of the respiratory system

• Chronic bronchitis, emphysema or chronic obstructive pulmonary diseases

• Asthma

Chapter XIII

 Diseases of the digestive system

• Irritable bowel syndrome

• Gastro-oesophageal reflux disease

Chapter XIV

 Diseases of the skin

• Hand eczema

• Psoriasis