|  G93 |  | Other disorders of brain   | 
|  |  | 
	
		|  G93.0 |  | Cerebral cysts |  
		|  |  | 
| Arachnoid cyst |  | Porencephalic cyst, acquired |  
		| Excludes1 | acquired periventricular cysts of newborn (P91.1) congenital cerebral cysts (Q04.6)
 
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		|  G93.1 |  | Anoxic brain damage, not elsewhere classified |  
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		| Excludes1 | cerebral anoxia due to anesthesia during labor and delivery (O74.3) cerebral anoxia due to anesthesia during the puerperium (O89.2)
 neonatal anoxia (P84)
 
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		|  G93.2 |  | Benign intracranial hypertension |  
		|  |  | 
| Pseudotumor |  
		| Excludes1 | hypertensive encephalopathy (I67.4) obstructive hydrocephalus (G91.1)
 
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		|  G93.3 |  | Postviral and related fatigue syndromes |  
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		| UseAdditionalCode | code, if applicable, for post COVID-19 condition, unspecified (U09.9) 
 |  
		| Excludes1 | chronic fatigue NOS (R53.82) neurasthenia (F48.8)
 
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		|  G93.31 |  | Postviral fatigue syndrome |  |  |  |  | 
	
		|  G93.32 |  | Myalgic encephalomyelitis/chronic fatigue syndrome |  
		|  |  | 
| Chronic fatigue syndrome |  | ME/CFS |  | Myalgic encephalomyelitis |  |  |  |  |  | 
	
		|  G93.39 |  | Other post infection and related fatigue syndromes |  |  | 
|  |  | 
	
		|  G93.4 |  | Other and unspecified encephalopathy |  
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		| Excludes2 | alcoholic encephalopathy (G31.2) encephalopathy in diseases classified elsewhere (G94)
 hypertensive encephalopathy (I67.4)
 toxic (metabolic) encephalopathy (G92.8)
 
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		|  G93.40 |  | Encephalopathy, unspecified |  |  |  |  | 
	
		|  G93.41 |  | Metabolic encephalopathy |  
		|  |  |  |  |  |  |  | 
	
		|  G93.42 |  | Megalencephalic leukoencephalopathy with subcortical cysts |  |  |  |  | 
	
		|  G93.43 |  | Leukoencephalopathy with calcifications and cysts |  |  |  |  | 
	
		|  G93.44 |  | Adult-onset leukodystrophy with axonal spheroids |  
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| Adult-onset leukoencephalopathy with axonal spheroids and pigmented glia |  |  |  |  |  | 
	
		|  G93.45 |  | Developmental and epileptic encephalopathy |  
		|  |  | 
| Early infantile epileptic encephalopathy |  
		| CodeAlso | , if applicable, associated disorders such as: developmental disorders of scholastic skills (F81.-)
 developmental disorder of speech and language (F80.-)
 epilepsy, by specific type (G40.-)
 intellectual disabilities (F70-F79)
 other neurodevelopmental disorder (F88)
 pervasive developmental disorders (F84.-)
 
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		|  G93.49 |  | Other encephalopathy |  
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		|  G93.5 |  | Compression of brain |  
		|  |  | 
| Arnold-Chiari type 1 compression of brain |  | Compression of brain (stem) |  | Herniation of brain (stem) |  
		| Excludes1 | traumatic compression of brain (S06.A-) 
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		|  G93.6 |  | Cerebral edema |  
		|  |  | 
	
		| Excludes1 | cerebral edema due to birth injury (P11.0) traumatic cerebral edema (S06.1-)
 
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		|  G93.7 |  | Reye's syndrome |  
		|  |  | 
	
		| CodeFirst | poisoning due to salicylates, if applicable (T39.0-, with sixth character 1-4) 
 |  
		| UseAdditionalCode | code for adverse effect due to salicylates, if applicable (T39.0-, with sixth character 5) 
 |  
		| age | Pediatric: [0-17] 
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		|  G93.8 |  | Other specified disorders of brain |  |  |  | 
	
		|  G93.81 |  | Temporal sclerosis |  
		|  |  | 
| Hippocampal sclerosis |  | Mesial temporal sclerosis |  |  |  |  |  | 
	
		|  G93.82 |  | Brain death |  |  |  |  | 
	
		|  G93.89 |  | Other specified disorders of brain |  
		|  |  | 
| Postradiation encephalopathy |  |  |  | 
|  |  | 
	
		|  G93.9 |  | Disorder of brain, unspecified |  |