Structure of the ICD-11 Classification

1 Chronic Primary Pain

1.1 Chronic primary widespread pain

1.1.1 Fibromyalgia Syndrome
1.1.2 Other chronic widespread pain

1.2 Primary headache

1.2.1 Chronic Migraine
1.2.2 Chronic Tension Type Headache
[…]

1.3 Primary orofacial pain

[…]

1.4 Primary visceral pain

1.4.1 Non-cardiac chest pain
1.4.2 Chronic pelvic pain
1. 4.3 IBS
[…]

1.5 Primary musculoskeletal pain

1.5.1 Chronic regional pain syndrome
1.5.2 Chronic primary back/neck pain
1.5.3 Chronic primary knee and limb pain?
[…]

1.x Other chronic primary pain
1.z Unspecified chronic primary pain

2 Chronic Cancer Pain

2.1 Chronic cancer-related pain
2.2 Chronic painful chemotherapy-induced polyneuropathy

[Secondary parent: Chronic peripheral neuropathic pain]

2.3 Chronic post cancer-surgery pain

[Secondary parent: Chronic postsurgical pain]

2.4 Chronic post-radiotherapy pain
2.x Other chronic cancer pain
2.z Unspecified chronic cancer pain

3 Chronic Postsurgical and Posttraumatic Pain

3.1 Chronic postsurgical pain
3.2 Chronic posttraumatic pain
3.x Other chronic postsurgical and posttraumatic pain
3.z Unspecific chronic postsurgical and posttraumatic pain

4 Chronic Neuropathic Pain

4.1 Chronic central neuropathic pain
4.2 Chronic peripheral neuropathic pain
4.x Other chronic neuropathic pain
4.z Unspecified chronic neuropathic pain

5 Chronic Headache and Orofacial Pain

5.1 Chronic primary headache

[Primary parent: Chronic primary pain]

5.2 Chronic secondary headache
5.3 Chronic primary orofacial pain

[Primary parent: Chronic primary pain]

5.4 Chronic secondary orofacial pain
5.x Other chronic headache and orofacial pain
5.z Unspecified chronic headache and orofacial pain

6 Chronic Visceral Pain

6.1 Chronic visceral pain from persistent inflammation
6.2 Chronic visceral pain from vascular mechanisms
6.3 Chronic visceral pain from obstruction/distension
6.4 Chronic visceral pain from traction/compression
6.5 Chronic visceral pain from combined mechanisms
6.6 Chronic visceral pain from cancer

[Primary parent: Chronic cancer pain]

6.7 Chronic primary visceral pain

[Primary parent: Chronic primary pain]

6.x Other chronic visceral pain
6.z Unspecified chronic visceral pain


7 Chronic Musculoskeletal Pain

7.1 Chronic musculoskeletal pain from persistent inflammation
7.2 Chronic musculoskeletal pain associated with structural changes
7.3 Chronic musculoskeletal pain due to disease of the nervous system [excluding neuropathic pain]
7.4 Chronic primary musculoskeletal pain

[Primary parent: Chronic primary pain]

7.x Other chronic musculoskeletal pain
7.z Unspecified chronic musculoskeletal pain