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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 7.1. Headache attributed to high cerebrospinal fluid pressure 7.2. Headache attributed to low cerebrospinal fluid pressure7.3. Headache attributed to non-infectious inflammatory disease7.4. Headache attributed to intracranial neoplasm [C00-D48]7.4.1. Headache attributed to increased intracranial pressure or hydrocephalus caused by neoplasm 7.4.2. Headache attributed directly to neoplasm 7.4.3. Headache attributed to carcinomatous meningitis [C79.3] 7.4.4. Headache attributed to hypothalamic or pituitary hyper- or hyposecretion [E23.0] 7.5. Headache attributed to intrathecal injection [G97.8] 7.6. Headache attributed to epileptic seizure [G40.x or G41.x to specify seizure type] 7.7. Headache attributed to Chiari malformation type I (CM1) [Q07.0] 7.8. Syndrome of transient Headache and Neurological Deficits with cerebrospinal fluid Lymphocytosis (HaNDL) 7.9. Headache attributed to other non-vascular intracranial disorder Bibliography and references8. 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 12. HEADACHE ATTRIBUTED TO PSYCHIATRIC DISORDER 

IHS	Diagnosis	ICD-10
7.4.1	Headache attributed to increased intracranial pressure or hydrocephalus caused by neoplasm	G44.822

Diagnostic criteria:

Diffuse non-pulsating headache with at least one of the following characteristics and fulfilling criteria C and D:
1. associated with nausea and/or vomiting
2. worsened by physical activity and/or manoeuvres known to increase intracranial pressure (such as Valsalva manoeuvre, coughing or sneezing)
3. occurring in attack-like episodes¹
Space-occupying intracranial tumour demonstrated by CT or MRI and causing hydrocephalus²
Headache develops and/or deteriorates in close temporal relation to the hydrocephalus
Headache improves within 7 days after surgical removal or volume-reduction of tumour

Notes:

Onset of headache can be sudden (thunderclap headache) and, in such cases, associated with loss of consciousness.
For example, colloid cyst of the IIIrd ventricle.

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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.

IHS Subcommittee

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

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Cephalalgia

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