|  T70 |  | Effects of air pressure and water pressure   | 
	
		|  |  | 
	
		| char7Note | The appropriate 7th character is to be added to each code from category T70 
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		| char7Def | A: initial encounter D: subsequent encounter
 S: sequela
 
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		|  T70.0 |  | Otitic barotrauma |  
		|  |  | 
| Aero-otitis media |  | Effects of change in ambient atmospheric pressure or water pressure on ears |  |  | 
|  |  | 
	
		|  T70.1 |  | Sinus barotrauma |  
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| Aerosinusitis |  | Effects of change in ambient atmospheric pressure on sinuses |  |  | 
|  |  | 
	
		|  T70.2 |  | Other and unspecified effects of high altitude |  
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		| Excludes2 | polycythemia due to high altitude (D75.1) 
 |  |  |  |  | 
	
		|  T70.20 |  | Unspecified effects of high altitude |  |  |  |  | 
	
		|  T70.29 |  | Other effects of high altitude |  
		|  |  | 
| Alpine sickness |  | Anoxia due to high altitude |  | Barotrauma NOS |  | Hypobaropathy |  | Mountain sickness |  |  |  | 
|  |  | 
	
		|  T70.3 |  | Caisson disease [decompression sickness] |  
		|  |  | 
| Compressed-air disease |  | Diver's palsy or paralysis |  |  | 
|  |  | 
	
		|  T70.4 |  | Effects of high-pressure fluids |  
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| Hydraulic jet injection (industrial) |  | Pneumatic jet injection (industrial) |  | Traumatic jet injection (industrial) |  |  | 
|  |  | 
	
		|  T70.8 |  | Other effects of air pressure and water pressure |  | 
|  |  | 
	
		|  T70.9 |  | Effect of air pressure and water pressure, unspecified |  |