Headquarters WHO
 ----------------

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 These pages are from the International Classification of Diseases (ICD),
 volume 1, section: Other disorders of the nervous system, pages 422-424.
 The item of interest is G93.3.
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 [Page 422]

 Other disorders of the nervous system
 (G90-G99)

 G90    Disorders of autonomic nervous system
 ---    Excludes: dysfunction of autonomic nervous system due to
                  alcohol (G31.2)

 G90.0  Idiopathic peripheral autonomic neuropathy
        Carotid sinus syncope
 G90.1  Familial dysautonomia [Riley-Day]


 [Page 423]

 G90.2  Horner's syndrome
        Bernard(-Horner) syndrome
 G90.3  Multi-system degeneration
        Neurogenic orthostatic hypotension [Shy-Drager]
        Excludes: orthostatic hypotension NOS (I95.1)
 G90.8  Other disorders of autonomic nervous system
 G90.9  Disorder of autonomic nervous system, unspecified

 G91    Hydrocephalus
 ---    Includes: acquired hydrocephalus
        Excludes: hydrocephalus:
                  - congenital (Q03.-)
                  - due to congenital toxoplasmosis (P37.1)

 G91.0  Communicating hydrocephalus
 G91.1  Obstructive hydrocephalus
 G91.2  Normal-pressure hydrocephalus
 G91.3  Post-traumatic hydrocephalus, unspecified
 G91.8  Other hydrocephalus
 G91.9  Hydrocephalus, unspecified

 G92    Toxic encephalopathy
 ---    Use additional external cause code (Chapter XX), if desired, to
        identify toxic agent

 G93    Other disorders of brain
 ---

 G93.0  Cerebral cysts
        Arachnoid cyst
        Porencephalic cyst. acquired
        Excludes: acquired periventricular cysts of newborn (P91.1)
                  congenital cerebral cysts (Q04.6)


 [Page 424]

 G93.1  Anoxic brain damage, not elsewhere classified
        Excludes: complicating:
                  - abortion or ectopic or molar pregnancy (O00-O07),
                    O08.8)
                  - pregnancy, labour or delivery (O29.2, O74.3,
                    O89.2)
                  - surgical and medical care (T80-T88)
                  neonatal anoxia (P21.9)
 G93.2  Benign intracranial hypertension
        Excludes: hypertensive encephalopathy (I67.4)
 G93.3  Postviral fatigue syndrome
        Benign myalgic encephalomyelitis
 G93.4  Encephalopathy, unspecified
        Excludes: encephalopathy:
                  - alcoholic (G31.2)
                  - toxis (G92)
 G93.5  Compression of brain
        Compression \
                     > of brain (stem)
        Herniation  /
        Excludes: traumatic compression of brain (diffuse) (S06.2)
                  - focal (S06.3)
 G93.6  Cerebral oedema
        Excludes: cerebral oedema:
                  - due to birth injury (P11.0)
                  - traumatic (S06.1)
 G93.7  Reye's syndrome
        Use additional external cause code (Chapter XX), if desired, to
        identify cause
 G93.8  Other specified disorders of brain
        Postradiation encephalopathy
        Use additional external cause code (Chapter XX), if desired, to
        identify cause
 G93.9  Disorder of brain, unspecified