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5. HEADACHE ATTRIBUTED TO HEAD AND/OR NECK TRAUMA 6. HEADACHE ATTRIBUTED TO CRANIAL OR CERVICAL VASCULAR DISORDER 7. HEADACHE ATTRIBUTED TO NON-VASCULAR INTRACRANIAL DISORDER 8. HEADACHE ATTRIBUTED TO A SUBSTANCE OR ITS WITHDRAWAL 9. HEADACHE ATTRIBUTED TO INFECTION 10. HEADACHE ATTRIBUTED TO DISORDER OF HOMOEOSTASIS 11. HEADACHE OR FACIAL PAIN ATTRIBUTED TO DISORDER OF CRANIUM, NECK, EYES, EARS, NOSE, SINUSES, TEETH, MOUTH OR OTHER FACIAL OR CRANIAL STRUCTURES 11.1. Headache attributed to disorder of cranial bone [M80-M89.8] 11.2. Headache attributed to disorder of neck [M99] 11.2.1. Cervicogenic headache [M99] 11.2.2. Headache attributed to retropharyngeal tendonitis [M79.8] 11.2.3. Headache attributed to craniocervical dystonia [G24] 11.3. Headache attributed to disorder of eyes 11.4. Headache attributed to disorder of ears [H60-H95] 11.5. Headache attributed to rhinosinusitis [J01] 11.6. Headache attributed to disorder of teeth, jaws or related structures [K00-K14] 11.7. Headache or facial pain attributed to temporomandibular joint (TMJ) disorder [K07.6] 11.8. Headache attributed to other disorder of cranium, neck, eyes, ears, nose, sinuses, teeth, mouth or other facial or cervical structures [code to specify aetiology] Bibliography12. HEADACHE ATTRIBUTED TO PSYCHIATRIC DISORDER 

IHS	Diagnosis	ICD-10
11.2.3	Headache attributed to craniocervical dystonia [G24]	G44.841

Diagnostic criteria:

Sensation of cramp, tension or pain in the neck, radiating to the back of the head or to the whole head and fulfilling criteria C and D
Abnormal movements or defective posture of neck or head due to muscular hyperactivity
Evidence that pain is attributed to muscular hyperactivity based on at least one of the following:
1. demonstration of clinical signs that implicate a source of pain in the hyperactive muscle (eg, pain is precipitated or exacerbated by muscle contraction, movements, sustained posture or external pressure)
2. simultaneous onset of pain and muscular hyperactivity
Pain resolves within 3 months after successful treatment of the causative disorder

Comment:

Focal dystonias of the head and neck accompanied by pain are pharyngeal dystonia, spasmodic torticollis, mandibular dystonia, lingual dystonia and a combination of the cranial and cervical dystonias (segmental craniocervical dystonia). Pain is caused by local contractions and secondary changes.

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IHS vs. ICD-10

To facilitate headache diagnosis in daily practice, the classification provides the corresponding WHO ICD-10NA codes for each IHS code.

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The Classification Subcommittee prepares and revises the International Classification of Headache Disorders.

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