|  Q99 |  | Other chromosome abnormalities, not elsewhere classified   | 
|  |  | 
	
		|  Q99.0 |  | Chimera 46, XX/46, XY |  
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| Chimera 46, XX/46, XY true hermaphrodite |  |  | 
|  |  | 
	
		|  Q99.1 |  | 46, XX true hermaphrodite |  
		|  |  | 
| 46, XX with streak gonads |  | 46, XY with streak gonads |  | Pure gonadal dysgenesis |  |  | 
|  |  | 
	
		|  Q99.2 |  | Fragile X chromosome |  
		|  |  |  |  | 
|  |  | 
	
		|  Q99.8 |  | Other specified chromosome abnormalities |  |  |  | 
	
		|  Q99.81 |  | Usher syndrome |  
		|  |  | 
	
		| UseAdditionalCode | code to identify any auditory and visual manifestations 
 |  |  |  |  | 
	
		|  Q99.811 |  | Usher syndrome, type 1 |  |  |  |  | 
	
		|  Q99.812 |  | Usher syndrome, type 2 |  |  |  |  | 
	
		|  Q99.813 |  | Usher syndrome, type 3 |  |  |  |  | 
	
		|  Q99.818 |  | Other Usher syndrome |  
		|  |  |  |  |  |  |  | 
	
		|  Q99.819 |  | Usher syndrome, unspecified |  |  |  |  |  | 
	
		|  Q99.89 |  | Other specified chromosome abnormalities |  |  | 
|  |  | 
	
		|  Q99.9 |  | Chromosomal abnormality, unspecified |  |