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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 8.1. Headache induced by acute substance use or exposure  8.2. Medication-overuse headache (MOH) 8.3. Headache as an adverse event attributed to chronic medication [code to specify substance] 8.3.1. Exogenous hormone-induced headache [Y42.4] 8.4. Headache attributed to substance withdrawal Bibliography9. 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
8.3.1	Exogenous hormone-induced headache [Y42.4]	G44.418

Diagnostic criteria:

Headache or migraine fulfilling criteria C and D
Regular use of exogenous hormones
Headache or migraine develops or markedly worsens within 3 months of commencing exogenous hormones
Headache or migraine resolves or reverts to its previous pattern within 3 months after total discontinuation of exogenous hormones

Comments:

Regular use of exogenous hormones, typically for contraception or hormone replacement therapy, can be associated with increase in frequency or new development of headache or migraine.

When a woman also experiences headache or migraine associated with exogenous oestrogen-withdrawal, both codes 8.3.1 Exogenous hormone-induced headache and 8.4.3 Oestrogen-withdrawal headache should be used.

Sitemap

Consult the Sitemap to learn more about the structure of the classification and its main chapters.

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

Cephalalgia is the official journal of the IHS. It contains original papers on all aspects of headache. The journal provides an international forum for original research papers, review articles and short communications.www.cephalalgia.org

IHS Discussion Group

Ask questions and share information about the 2nd edition of the Headache Classification in one of our peer-to-peer forums. To the Discussion Group

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