The block G90–G99 of ICD-10 is titled “Other disorders of the nervous system”. It is part of Chapter VI, Diseases of the nervous system, and holds 10 groups.
Codes in G90–G99
- G90.0Idiopathic peripheral autonomic neuropathy
- G90.1Familial dysautonomia [Riley-Day]
- G90.2Horner syndrome
- G90.4Autonomic dysreflexia
- G90.5Complex regional pain syndrome type I
- G90.6Complex regional pain syndrome type II
- G90.7Complex regional pain syndrome, other and unspecified type
- G90.8Other disorders of autonomic nervous system
- G90.9Disorder of autonomic nervous system, unspecified
- G93.0Cerebral cysts
- G93.1Anoxic brain damage, not elsewhere classified
- G93.2Benign intracranial hypertension
- G93.3Postviral fatigue syndrome
- G93.4Encephalopathy, unspecified
- G93.5Compression of brain
- G93.6Cerebral oedema
- G93.7Reye syndrome
- G93.8Other specified disorders of brain
- G93.9Disorder of brain, unspecified
- G94.0Hydrocephalus in infectious and parasitic diseases classified elsewhereA00-B99
- G94.1Hydrocephalus in neoplastic diseaseC00-D48
- G94.2Hydrocephalus in other diseases classified elsewhere
- G94.3Encephalopathy in diseases classified elsewhere
- G94.8Other specified disorders of brain in diseases classified elsewhere
Based on the World Health Organization’s International Statistical Classification of Diseases and Related Health Problems, 10th revision (ICD-10), 2019 version, and the national editions published by each country’s health authority. This page is a reference, not coding advice; follow your national coding rules when you report.
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