| Service | Number of cases | OPS key | Info | 
																			
											| Operation on the inferior nasal concha | 214 | 5-215.3 |  | 
																			
											| Operation on several paranasal sinuses | 181 | 5-224.63 |  | 
																			
											| Surgical removal or reconstruction of the nasal septum | 149 | 5-214.6 |  | 
																			
											| Surgical removal or reconstruction of the nasal septum | 35 | 5-214.3 |  | 
																			
											| Surgical removal or reconstruction of the nasal septum | 11 | 5-214.70 |  | 
																			
											| Operation on the maxillary sinuses | 9 | 5-221.1 |  | 
																			
											| Other reconstructive operations on the throat (pharynx) | 8 | 5-294.4 |  | 
																			
											| Surgical incision into the eardrum (tympanic membrane) | 7 | 5-200.4 |  | 
																			
											| Operation on several paranasal sinuses | 7 | 5-224.3 |  | 
																			
											| Surgical removal of the palatine tonsils (without removal of the adenoids) - tonsillectomy without adenoidectomy | 6 | 5-281.5 |  | 
																			
											| Surgical removal of the (enlarged) adenoids (without removal of the tonsils) | 6 | 5-285.0 |  | 
																			
											| Revision operations | 5 | 5-983 |  | 
																			
											| Examination of the trachea and the bronchi by endoscopy | not specified | 1-620.01 |  | 
																			
											| Surgical removal of a residual connection between the thyroid gland and tongue after birth | not specified | 5-065.1 |  | 
																			
											| Surgical construction or reconstructive operation on the external auditory canal | not specified | 5-185.0 |  | 
																			
											| Surgical closure of the eardrum (tympanic membrane) or reconstructive operations on the ossicles (small bones) of the ear | not specified | 5-195.b0 |  | 
																			
											| Surgical incision into the eardrum (tympanic membrane) | not specified | 5-200.5 |  | 
																			
											| Surgical removal or reconstruction of the nasal septum | not specified | 5-214.0 |  | 
																			
											| Surgical removal or reconstruction of the nasal septum | not specified | 5-214.4 |  | 
																			
											| Operation on the inferior nasal concha | not specified | 5-215.1 |  | 
																			
											| Operation on the inferior nasal concha | not specified | 5-215.2 |  | 
																			
											| Operation on the inferior nasal concha | not specified | 5-215.4 |  | 
																			
											| Corrective surgery on the external nose | not specified | 5-217.3 |  | 
																			
											| Other operations on the nose | not specified | 5-219.0 |  | 
																			
											| Operation on the maxillary sinuses | not specified | 5-221.0 |  | 
																			
											| Operation on the ethmoid bone or on the sphenoid sinus | not specified | 5-222.20 |  | 
																			
											| Operation on several paranasal sinuses | not specified | 5-224.5 |  | 
																			
											| Corrective surgery on the hard palate - palatoplasty | not specified | 5-275.8 |  | 
																			
											| Surgical removal of the palatine tonsils (without removal of the adenoids) - tonsillectomy without adenoidectomy | not specified | 5-281.0 |  | 
																			
											| Surgical removal of the tonsils and adenoids | not specified | 5-282.1 |  | 
																			
											| Surgical removal of the (enlarged) adenoids (without removal of the tonsils) | not specified | 5-285.x |  | 
																			
											| Other partial removal of the larynx | not specified | 5-302.1 |  | 
																			
											| Skin grafting from the area around the wound | not specified | 5-903.64 |  | 
																			
											| Combined reconstructive operations on the skin or subcutaneous tissues | not specified | 5-906.15 |  | 
																			
											| Insertion of a tube into the trachea for ventilation - intubation | not specified | 8-701 |  | 
																			
											| Intensive care monitoring of respiration, the heart and the circulation without measurement of the pressure in the pulmonary artery and in the right atrium of the heart | not specified | 8-930 |  | 
																			
											| Treatment on the intensive care unit (basic procedures) | not specified | 8-980.0 |  |