| Code | Title | 
					
				| – | Top Categories | 
		
					
				| 0 | Medical and Surgical | 
					
				| 0W | Anatomical Regions, General | 
					
				| 0W9 | Drainage
					Anatomical Regions, General, Drainage | 
					
				| 0W90 | Head | 
					
				| 0W900 | Open | 
					
				| 0W9000 | Drainage Device | 
					
				| 0W9000Z | No Qualifier
					Drainage of Head with Drainage Device, Open Approach | 
					
				| 0W900Z | No Device | 
					
				| 0W900ZX | Diagnostic
					Drainage of Head, Open Approach, Diagnostic | 
					
				| 0W900ZZ | No Qualifier
					Drainage of Head, Open Approach | 
					
				| 0W903 | Percutaneous | 
					
				| 0W9030 | Drainage Device | 
					
				| 0W9030Z | No Qualifier
					Drainage of Head with Drainage Device, Percutaneous Approach | 
					
				| 0W903Z | No Device | 
					
				| 0W903ZX | Diagnostic
					Drainage of Head, Percutaneous Approach, Diagnostic | 
					
				| 0W903ZZ | No Qualifier
					Drainage of Head, Percutaneous Approach | 
					
				| 0W904 | Percutaneous Endoscopic | 
					
				| 0W9040 | Drainage Device | 
					
				| 0W9040Z | No Qualifier
					Drainage of Head with Drainage Device, Percutaneous Endoscopic Approach | 
					
				| 0W904Z | No Device | 
					
				| 0W904ZX | Diagnostic
					Drainage of Head, Percutaneous Endoscopic Approach, Diagnostic | 
					
				| 0W904ZZ | No Qualifier
					Drainage of Head, Percutaneous Endoscopic Approach |