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Table 4 WHO ICD-11 disease categories and rare diseases of the included studies

From: Barriers and facilitators to the implementation of guidelines in rare diseases: a systematic review

ICD-11 disease categories

Orphanet prevalence

No. of studies

03: Diseases of the blood or blood-forming organs

 

10 (22.7%)

Atypical Haemolytic Uraemic Syndrome

1–9/100,000

1

Sickle Cell Disease

1–5/10,000

9

04: Diseases of the immune system

 

11 (25.0%)

Hereditary Angioedema

1–9/100,000

6

Primary Immunodeficiency

1–9/100,000

5

05: Endocrine, nutritional or metabolic disease

 

2 (4.5%)

Urea Cycle Disorders (group of disorders)

–

1

Gaucher’s disease

1–9/100,000

1

08: Diseases of the nervous system

 

6 (13.6%)

Duchenne Muscular Dystrophy

1–9/100,000

5

Spinal Muscular Atrophy (group)

–

1

09: Diseases of the visual system

 

2 (4.5%)

Rare Non-Infectious Uveitis (group)

–

2

12: Diseases of the respiratory system

 

10 (22.7%)

Cystic Fibrosis

1–5/10,000

4

Idiopathic Bronchiectasis

–

1

Idiopathic Pulmonary Fibrosis

1–5/10,000

5

13: Diseases of the digestive system

 

1 (2.3%)

Primary Biliary Cholangitis

1–5/10,000

1

15: Diseases of the musculoskeletal system or connective tissue

 

1 (2.3%)

Rare Connective Tissues Disease (group)

–

1

Not applicable

 

1 (2.3%)

Non-specific

NA

1

  1. ICD-11 Mortality and Morbidity Statistics codes are indicated in bold
  2. *Disease prevalence when Orphanet database searched on 22/02/2022 [109]