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IHS vs. ICD-10

 

IHS ICHD-II codeWHO ICD-10NA codeDiagnosis [and aetiological ICD-10 code for secondary headache disorders]
1. [G43] Migraine
1.1[G43.0]Migraine without aura
1.2[G43.1]Migraine with aura
1.2.1[G43.10]Typical aura with migraine headache
1.2.2[G43.10]Typical aura with non-migraine headache
1.2.3[G43.104]Typical aura without headache
1.2.4[G43.105]Familial hemiplegic migraine (FHM)
1.2.5[G43.105]Sporadic hemiplegic migraine
1.2.6[G43.103]Basilar-type migraine
1.3[G43.82]Childhood periodic syndromes that are commonly precursors of migraine
1.3.1[G43.82]Cyclical vomiting
1.3.2 [G43.820]Abdominal migraine
1.3.3[G43.821]Benign paroxysmal vertigo of childhood
1.4[G43.81]Retinal migraine
1.5[G43.3]Complications of migraine
1.5.1[G43.3]Chronic migraine
1.5.2[G43.2]Status migrainosus
1.5.3[G43.3]Persistent aura without infarction
1.5.4[G43.3]Migrainous infarction
1.5.5[G43.3] +[G40.x or G41.x]1 Migraine-triggered seizures
1.6 [G43.83] Probable migraine
1.6.1[G43.83]Probable migraine without aura
1.6.2[G43.83]Probable migraine with aura
1.6.5[G43.83]Probable chronic migraine

1. The additional code specifies the type of seizure.

 

IHS ICHD-II codeWHO ICD-10NA codeDiagnosis [und ätiologischer ICD-10 code für sekundäre Kopfschmerzerkrankungen]
2. [G44.2] Tension-type headache (TTH)
2.1[G44.2]Infrequent episodic tension-type headache
2.1.1[G44.20]Infrequent episodic tension-type headache associated with pericranial tenderness
2.1.2[G44.21]Infrequent episodic tension-type headache not associated with pericranial tenderness
2.2[G44.2]Frequent episodic tension-type headache
2.2.1[G44.20]Frequent episodic tension-type headache associated with pericranial tenderness
2.2.2[G44.21]Frequent episodic tension-type headache not associated with pericranial tenderness
2.3[G44.2]Chronic tension-type headache
2.3.1[G44.22]Chronic tension-type headache associated with pericranial tenderness
2.3.2[G44.23]Chronic tension-type headache not associated with pericranial tenderness
2.4[G44.28]Probable tension-type headache
2.4.1[G44.28]Probable infrequent episodic tension-type headache
2.4.2[G44.28]Probable frequent episodic tension-type headache
2.4.3[G44.28]Probable chronic tension-type headache

 

IHS ICHD-II codeWHO ICD-10NA codeDiagnosis [und ätiologischer ICD-10 code für sekundäre Kopfschmerzerkrankungen]
3. [G44.0] Cluster headache and other trigeminal autonomic cephalalgias
3.1[G44.0]Cluster headache
3.1.1[G44.01]Episodic cluster headache
3.1.2[G44.02]Chronic cluster headache
3.2[G44.03]Paroxysmal hemicrania
3.2.1[G44.03]Episodic paroxysmal hemicrania
3.2.2[G44.03]Chronic paroxysmal hemicrania (CPH)
3.3[G44.08]Short-lasting unilateral neuralgiform headache attacks with conjunctival injection and tearing (SUNCT)
3.4[G44.08]Probable trigeminal autonomic cephalalgia
3.4.1[G44.08]Probable cluster headache
3.4.2[G44.08]Probable paroxysmal hemicrania
3.4.3[G44.08]Probable SUNCT

 

IHS ICHD-II codeWHO ICD-10NA codeDiagnosis [und ätiologischer ICD-10 code für sekundäre Kopfschmerzerkrankungen]
4. [G44.80] Other primary headaches
4.1[G44.800]Primary stabbing headache
4.2[G44.803]Primary cough headache
4.3[G44.804]Primary exertional headache
4.4[G44.805]Primary headache associated with sexual activity
4.4.1[G44.805]Preorgasmic headache
4.4.2[G44.805]Orgasmic headache
4.5[G44.80]Hypnic headache
4.6[G44.80]Primary thunderclap headache
4.7[G44.80]Hemicrania continua
4.8[G44.2]New daily-persistent headache (NDPH)

 

IHS ICHD-II codeWHO ICD-10NA codeDiagnosis [und ätiologischer ICD-10 code für sekundäre Kopfschmerzerkrankungen]
5. [G44.88] Headache attributed to head and/or neck trauma
5.1[G44.880]Acute post-traumatic headache
5.1.1[G44.880]Acute post-traumatic headache attributed to moderate or severe head injury [S06]
5.1.2[G44.880]Acute post-traumatic headache attributed to mild head injury [S09.9]
5.2[G44.3]Chronic post-traumatic headache
5.2.1[G44.30]Chronic post-traumatic headache attributed to moderate or severe head injury [S06]
5.2.2[G44.31]Chronic post-traumatic headache attributed to mild head injury [S09.9]
5.3[G44.841]Acute headache attributed to whiplash injury [S13.4]
5.4[G44.841]Chronic headache attributed to whiplash injury [S13.4]
5.5[G44.88]Headache attributed to traumatic intracranial haematoma
5.5.1[G44.88]Headache attributed to epidural haematoma [S06.4]
5.5.2[G44.88]Headache attributed to subdural haematoma [S06.5]
5.6[G44.88]Headache attributed to other head and/or neck trauma [S06]
5.6.1[G44.88]Acute headache attributed to other head and/or neck trauma [S06]
5.6.2[G44.88]Chronic headache attributed to other head and/or neck trauma [S06]
5.7[G44.88]Post-craniotomy headache
5.7.1[G44.880]Acute post-craniotomy headache
5.7.2[G44.30]Chronic post-craniotomy headache

 

IHS ICHD-II codeWHO ICD-10NA codeDiagnosis [und ätiologischer ICD-10 code für sekundäre Kopfschmerzerkrankungen]
6. [G44.81] Headache attributed to cranial or cervical vascular disorder
6.1[G44.810]Headache attributed to ischaemic stroke or transient ischaemic attack
6.1.1[G44.810]Headache attributed to ischaemic stroke (cerebral infarction) [I63]
6.1.2[G44.810]Headache attributed to transient ischaemic attack (TIA) [G45]
6.2[G44.810]Headache attributed to non-traumatic intracranial haemorrhage [I62]
6.2.1[G44.810]Headache attributed to intracerebral haemorrhage [I61]
6.2.2[G44.810]Headache attributed to subarachnoid haemorrhage (SAH) [I60]
6.3[G44.811]Headache attributed to unruptured vascular malformation [Q28]
6.3.1[G44.811]Headache attributed to saccular aneurysm [Q28.3]
6.3.2[G44.811]Headache attributed to arteriovenous malformation (AVM) [Q28.2]
6.3.3[G44.811]Headache attributed to dural arteriovenous fistula [I67.1]
6.3.4[G44.811]Headache attributed to cavernous angioma [D18.0]
6.3.5[G44.811]Headache attributed to encephalotrigeminal or leptomeningeal angiomatosis (Sturge Weber syndrome) [Q85.8]
6.4[G44.812]Headache attributed to arteritis [M31]
6.4.1[G44.812]Headache attributed to giant cell arteritis (GCA) [M31.6]
6.4.2[G44.812]Headache attributed to primary central nervous system (CNS) angiitis [I67.7]
6.4.3[G44.812]Headache attributed to secondary central nervous system (CNS) angiitis [I68.2]
6.5[G44.810]Carotid or vertebral artery pain [I63.0, I63.2, I65.0, I65.2 or I67.0]
6.5.1[G44.810]Headache or facial or neck pain attributed to arterial dissection [I67.0]
6.5.2[G44.814]Post-endarterectomy headache [I97.8]
6.5.3[G44.810]Carotid angioplasty headache
6.5.4[G44.810]Headache attributed to intracranial endovascular procedures
6.5.5[G44.810]Angiography headache
6.6[G44.810]Headache attributed to cerebral venous thrombosis (CVT) [I63.6]
6.7[G44.81]Headache attributed to other intracranial vascular disorder
6.7.1[G44.81]Cerebral Autosomal Dominant Arteriopathy with Subcortical Infarcts and Leukoencephalopathy (CADASIL) [I67.8]
6.7.2[G44.81]Mitochondrial Encephalopathy, Lactic Acidosis and Stroke-like episodes (MELAS) [G31.81]
6.7.3[G44.81]Headache attributed to benign angiopathy of the central nervous system [I99]
6.7.4[G44.81]Headache attributed to pituitary apoplexy [E23.6]

 

IHS ICHD-II codeWHO ICD-10NA codeDiagnosis [und ätiologischer ICD-10 code für sekundäre Kopfschmerzerkrankungen]
7. [G44.82] Headache attributed to non-vascular intracranial disorder
7.1[G44.820]Headache attributed to high cerebrospinal fluid pressure
7.1.1[G44.820]Headache attributed to idiopathic intracranial hypertension (IIH) [G93.2]
7.1.2[G44.820]Headache attributed to intracranial hypertension secondary to metabolic, toxic or hormonal causes
7.1.3[G44.820]Headache attributed to intracranial hypertension secondary to hydrocephalus [G91.8]
7.2 [G44.820]Headache attributed to low cerebrospinal fluid pressure
7.2.1[G44.820]Post-dural puncture headache [G97.0]
7.2.2[G44.820]CSF fistula headache [G96.0]
7.2.3[G44.820]Headache attributed to spontaneous (or idiopathic) low CSF pressure
7.3[G44.82]Headache attributed to non-infectious inflammatory disease
7.3.1[G44.823]Headache attributed to neurosarcoidosis [D86.8]
7.3.2[G44.823]Headache attributed to aseptic (non-infectious) meningitis [code to specify aetiology]
7.3.3[G44.823]Headache attributed to other non-infectious inflammatory disease [code to specify aetiology]
7.3.4[G44.82]Headache attributed to lymphocytic hypophysitis [E23.6]
7.4[G44.822]Headache attributed to intracranial neoplasm [C00-D48]
7.4.1[G44.822]Headache attributed to increased intracranial pressure or hydrocephalus caused by neoplasm [code to specify neoplasm]
7.4.2[G44.822]Headache attributed directly to neoplasm [code to specify neoplasm]
7.4.3[G44.822]Headache attributed to carcinomatous meningitis [C79.3]
7.4.4[G44.822]Headache attributed to hypothalamic or pituitary hyper- or hyposecretion [E23.0]
7.5[G44.824]Headache attributed to intrathecal injection [G97.8]
7.6[G44.82]Headache attributed to epileptic seizure [G40.x or G41.x to specify seizure type]
7.6.1[G44.82]Hemicrania epileptica [G40.x or G41.x to specify seizure type]
7.6.2[G44.82]Post-seizure headache [G40.x or G41.x to specify seizure type]
7.7[G44.82]Headache attributed to Chiari malformation type I (CM1) [Q07.0]
7.8[G44.82]Syndrome of transient Headache and Neurological Deficits with cerebrospinal fluid Lymphocytosis (HaNDL)
7.9[G44.82]Headache attributed to other non-vascular intracranial disorder

 

IHS ICHD-II codeWHO ICD-10NA codeDiagnosis [und ätiologischer ICD-10 code für sekundäre Kopfschmerzerkrankungen]
8. [G44.4 or G44.83] Headache attributed to a substance2 or its withdrawal
8.1[G44.40]Headache induced by acute substance use or exposure
8.1.1[G44.400]Nitric oxide (NO) donor-induced headache [X44]
8.1.1.1[G44.400]Immediate NO donor-induced headache [X44]
8.1.1.2[G44.400]Delayed NO donor-headache [X44]
8.1.2[G44.40]Phosphodiesterase (PDE) inhibitor-induced headache [X44]
8.1.3[G44.402]Carbon monoxide-induced headache [X47]
8.1.4[G44.83]Alcohol-induced headache [F10]
8.1.4.1[G44.83]Immediate alcohol-induced headache [F10]
8.1.4.2[G44.83]Delayed alcohol-induced headache [F10]
8.1.5[G44.4]Headache induced by food components and additives
8.1.5.1[G44.401]Monosodium glutamate-induced headache [X44]
8.1.6[G44.83]Cocaine-induced headache [F14]
8.1.7[G44.83]Cannabis-induced headache [F12]
8.1.8[G44.40]Histamine-induced headache [X44]
8.1.8.1[G44.40]Immediate histamine-induced headache [X44]
8.1.8.2[G44.40]Delayed histamine-induced headache [X44]
8.1.9[G44.40]Calcitonin gene-related peptide (CGRP)-induced headache [X44]
8.1.9.1[G44.40]Immediate CGRP-induced headache [X44]
8.1.9.2[G44.40]Delayed CGRP-induced headache [X44]
8.1.10[G44.41]Headache as an acute adverse event attributed to medication used for other indications [code to specify substance]
8.1.11[G44.4 or G44.83]Headache attributed to other acute substance use or exposure [code to specify substance]
8.2[G44.41 or G44.83]Medication-overuse headache (MOH)
8.2.1[G44.411]Ergotamine-overuse headache [Y52.5]
8.2.2[G44.41]Triptan-overuse headache
8.2.3[G44.410]Analgesic-overuse headache [F55.2]
8.2.4[G44.83]Opioid-overuse headache [F11.2]
8.2.5[G44.410]Combination analgesic-overuse headache [F55.2]
8.2.6[G44.41 ± G44.83]Medication-overuse headache attributed to combination of acute medications
8.2.7[G44.410]Headache attributed to other medication overuse [code to specify substance]
8.2.8[G44.41 or G44.83]Probable medication-overuse headache [code to specify substance]
8.3[G44.4]Headache as an adverse event attributed to chronic medication [code to specify substance]
8.3.1[G44.418]Exogenous hormone-induced headache [Y42.4]
8.4[G44.83]Headache attributed to substance withdrawal
8.4.1[G44.83]Caffeine-withdrawal headache [F15.3]
8.4.2[G44.83]Opioid-withdrawal headache [F11.3]
8.4.3[G44.83]Oestrogen-withdrawal headache [Y42.4]
8.4.4[G44.83]Headache attributed to withdrawal from chronic use of other substances [code to specify substance]

2 In ICD-10 substances are classified according to the presence or absence of a dependence-producing property. Headaches associated with psychoactive substances (dependence-producing) are classified in G44.83 with an additional code to indicate the nature of the disorder related to the substance use: eg, intoxication (F1x.0), dependence (F1x.2), withdrawal (F1x.3), etc. The 3rd character can be used to indicate the specific substance involved: eg, F10 for alcohol, F15 for caffeine, etc. Abuse of non-dependence-producing substances is classified in F55, with a 4th character to indicate the substance: eg, F55.2 abuse of analgesics. Headaches related to non-dependence-producing substances are classified in G44.4.

 

IHS ICHD-II codeWHO ICD-10NA codeDiagnosis [und ätiologischer ICD-10 code für sekundäre Kopfschmerzerkrankungen]
9. Headache attributed to infection
9.1[G44.821]Headache attributed to intracranial infection [G00-G09]
9.1.1[G44.821]Headache attributed to bacterial meningitis [G00.9]
9.1.2[G44.821]Headache attributed to lymphocytic meningitis [G03.9]
9.1.3[G44.821]Headache attributed to encephalitis [G04.9]
9.1.4[G44.821]Headache attributed to brain abscess [G06.0]
9.1.5[G44.821]Headache attributed to subdural empyema [G06.2]
9.2[G44.881]Headache attributed to systemic infection [A00-B97]
9.2.1[G44.881]Headache attributed to systemic bacterial infection [code to specify aetiology]
9.2.2[G44.881]Headache attributed to systemic viral infection [code to specify aetiology]
9.2.3[G44.881]Headache attributed to other systemic infection [code to specify aetiology]
9.3[G44.821]Headache attributed to HIV/AIDS [B22]
9.4[G44.821 or G44.881]Chronic post-infection headache [code to specify aetiology]
9.4.1[G44.821]Chronic post-bacterial meningitis headache [G00.9]

 

IHS ICHD-II codeWHO ICD-10NA codeDiagnosis [und ätiologischer ICD-10 code für sekundäre Kopfschmerzerkrankungen]
10. [G44.882] Headache attributed to disorder of homoeostasis
10.1[G44.882]Headache attributed to hypoxia and/or hypercapnia
10.1.1[G44.882]High-altitude headache [W94]
10.1.2[G44.882]Diving headache
10.1.3[G44.882]Sleep apnoea headache [G47.3]
10.2[G44.882]Dialysis headache [Y84.1]
10.3[G44.813]Headache attributed to arterial hypertension [I10]
10.3.1[G44.813]Headache attributed to phaeochromocytoma [D35.0 (benign) or C74.1 (malignant)]
10.3.2[G44.813]Headache attributed to hypertensive crisis without hypertensive encephalopathy [I10]
10.3.3[G44.813]Headache attributed to hypertensive encephalopathy [I67.4]
10.3.4[G44.813]Headache attributed to pre-eclampsia [O13-O14]
10.3.5[G44.813]Headache attributed to eclampsia [O15]
10.3.6[G44.813]Headache attributed to acute pressor response to an exogenous agent [code to specify aetiology]
10.4[G44.882]Headache attributed to hypothyroidism [E03.9]
10.5[G44.882]Headache attributed to fasting [T73.0]
10.6[G44.882]Cardiac cephalalgia [code to specify aetiology]
10.7[G44.882]Headache attributed to other disorder of homoeostasis [code to specify aetiology]

 

IHS ICHD-II codeWHO ICD-10NA codeDiagnosis [und ätiologischer ICD-10 code für sekundäre Kopfschmerzerkrankungen]
11. [G44.84] Headache or facial pain attributed to disorder of cranium, neck, eyes, ears, nose, sinuses, teeth, mouth or other facial or cranial structures
11.1[G44.840]Headache attributed to disorder of cranial bone [M80-M89.8]
11.2[G44.841]Headache attributed to disorder of neck [M99]
11.2.1[G44.841]Cervicogenic headache [M99]
11.2.2[G44.842]Headache attributed to retropharyngeal tendonitis [M79.8]
11.2.3[G44.841]Headache attributed to craniocervical dystonia [G24]
11.3[G44.843]Headache attributed to disorder of eyes
11.3.1[G44.843]Headache attributed to acute glaucoma [H40]
11.3.2[G44.843]Headache attributed to refractive errors [H52]
11.3.3[G44.843]Headache attributed to heterophoria or heterotropia (latent or manifest squint) [H50.3-H50.5]
11.3.4[G44.843]Headache attributed to ocular inflammatory disorder [code to specify aetiology]
11.4[G44.844]Headache attributed to disorder of ears [H60-H95]
11.5[G44.845]Headache attributed to rhinosinusitis [J01]
11.6[G44.846]Headache attributed to disorder of teeth, jaws or related structures [K00-K14]
11.7[G44.846]Headache or facial pain attributed to temporomandibular joint (TMJ) disorder [K07.6]
11.8[G44.84]Headache attributed to other disorder of cranium, neck, eyes, ears, nose, sinuses, teeth, mouth or other facial or cervical structures [code to specify aetiology]

 

IHS ICHD-II codeWHO ICD-10NA codeDiagnosis [und ätiologischer ICD-10 code für sekundäre Kopfschmerzerkrankungen]
12. [R51] Headache attributed to psychiatric disorder
12.1[R51]Headache attributed to somatisation disorder [F45.0]
12.2[R51]Headache attributed to psychotic disorder [code to specify aetiology]

 

IHS ICHD-II codeWHO ICD-10NA codeDiagnosis [und ätiologischer ICD-10 code für sekundäre Kopfschmerzerkrankungen]
13. [G44.847, G44.848 or G44.85] Cranial neuralgias and central causes of facial pain
13.1[G44.847]Trigeminal neuralgia
13.1.1[G44.847]Classical trigeminal neuralgia [G50.00]
13.1.2[G44.847]Symptomatic trigeminal neuralgia [G53.80] + [code to specify aetiology]
13.2[G44.847]Glossopharyngeal neuralgia
13.2.1[G44.847]Classical glossopharyngeal neuralgia [G52.10]
13.2.2[G44.847]Symptomatic glossopharyngeal neuralgia [G53.830] + [code to specify aetiology]
13.3[G44.847]Nervus intermedius neuralgia [G51.80]
13.4[G44.847]Superior laryngeal neuralgia [G52.20]
13.5[G44.847]Nasociliary neuralgia [G52.80]
13.6[G44.847]Supraorbital neuralgia [G52.80]
13.7[G44.847]Other terminal branch neuralgias [G52.80]
13.8[G44.847]Occipital neuralgia [G52.80]
13.9[G44.851]Neck-tongue syndrome
13.10[G44.801]External compression headache
13.11[G44.802]Cold-stimulus headache
13.11.1[G44.8020]Headache attributed to external application of a cold stimulus
13.11.2[G44.8021]Headache attributed to ingestion or inhalation of a cold stimulus
13.12[G44.848]Constant pain caused by compression, irritation or distortion of cranial nerves or upper cervical roots by structural lesions [G53.8] + [code to specify aetiology]
13.13[G44.848]Optic neuritis [H46]
13.14[G44.848]Ocular diabetic neuropathy [E10-E14]
13.15[G44.881 or G44.847]Head or facial pain attributed to herpes zoster
13.15.1[G44.881]Head or facial pain attributed to acute herpes zoster [B02.2]
13.15.2[G44.847]Post-herpetic neuralgia [B02.2]
13.16[G44.850]Tolosa-Hunt syndrome
13.17[G43.80]Ophthalmoplegic "migraine"
13.18[G44.810 or G44.847]Central causes of facial pain
13.18.1[G44.847]Anaesthesia dolorosa [G52.800] + [code to specify aetiology]
13.18.2[G44.810]Central post-stroke pain [G46.21]
13.18.3[G44.847]Facial pain attributed to multiple sclerosis [G35]
13.18.4[G44.847]Persistent idiopathic facial pain [G50.1]
13.18.5[G44.847]Burning mouth syndrome [code to specify aetiology]
13.19[G44.847]Other cranial neuralgia or other centrally mediated facial pain [code to specify aetiology]

 

IHS ICHD-II codeWHO ICD-10NA codeDiagnosis [und ätiologischer ICD-10 code für sekundäre Kopfschmerzerkrankungen]
14. [R51] Other headache, cranial neuralgia, central or primary facial pain
14.1[R51]Headache not elsewhere classified
14.2[R51]Headache unspecified

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