| Service | Number of cases | OPS key | Info | 
																			
											| 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 | 458 | 8-930 |  | 
																			
											| Examination of the oesophagus, stomach and duodenum by endoscopy | 310 | 1-632.0 |  | 
																			
											|  | 239 | 9-984.8 |  | 
																			
											|  | 227 | 9-984.7 |  | 
																			
											|  | 185 | 9-984.b |  | 
																			
											| Examination of the large intestine by endoscopy - colonoscopy | 157 | 1-650.2 |  | 
																			
											|  | 110 | 9-984.9 |  | 
																			
											| Computed tomography of the abdomen with contrast medium | 82 | 3-225 |  | 
																			
											| Computed tomography (CT) of the head without contrast medium | 80 | 3-200 |  | 
																			
											| Transfusion of blood, red blood cells or platelets from a donor to a recipient | 80 | 8-800.c0 |  | 
																			
											|  | 72 | 8-831.00 |  | 
																			
											|  | 70 | 8-98g.11 |  | 
																			
											| Computed tomography of the chest with contrast medium | 56 | 3-222 |  | 
																			
											| Taking a tissue sample (biopsy) of the upper digestive tract, biliary tract or the pancreas by endoscopy | 45 | 1-440.a |  | 
																			
											|  | 44 | 9-984.a |  | 
																			
											| Treatment by the targeted insertion of a needle into the chest with subsequent administration or removal of substances, e.g. fluid | 41 | 8-152.1 |  | 
																			
											|  | 41 | 9-984.6 |  | 
																			
											|  | 36 | 8-98g.10 |  | 
																			
											| Taking a tissue sample (biopsy) of the lower digestive tract by endoscopy | 32 | 1-444.7 |  | 
																			
											| Examination of the trachea and the bronchi by endoscopy | 27 | 1-620.00 |  | 
																			
											| Ultrasound of the heart (echocardiography) through the oesophagus - TEE | 23 | 3-052 |  | 
																			
											| Examination of the large intestine by endoscopy - colonoscopy | 19 | 1-650.0 |  | 
																			
											| Computed tomography (CT) of the abdomen without contrast medium | 17 | 3-207 |  | 
																			
											| Computed tomography (CT) of the spine and the spinal cord without contrast medium | 16 | 3-203 |  | 
																			
											|  | 16 | 8-98g.12 |  | 
																			
											| Surgical removal or destruction of diseased tissue in the large intestine | 14 | 5-452.61 |  | 
																			
											| Surgical insertion of a tube into the stomach through the abdominal wall for artificial feeding | 11 | 5-431.20 |  | 
																			
											| Other operations on the intestine | 11 | 5-469.d3 |  | 
																			
											| Examination of the trachea and the bronchi by endoscopy | 10 | 1-620.01 |  | 
																			
											| Treatment of cardiac arrhythmias with electric shocks - defibrillation | 10 | 8-640.0 |  | 
																			
											| Computed tomography (CT) of the chest without contrast medium | 9 | 3-202 |  | 
																			
											| Insertion of a tube into the trachea for ventilation - intubation | 9 | 8-701 |  | 
																			
											| Interdisciplinary management for colonisation or infection with multiresistant germs (pathogens) | 9 | 8-987.10 |  | 
																			
											|  | 8 | 8-018.0 |  | 
																			
											| Insertion of a small tube (cannula) or catheter into the space between the lungs and ribs for the drainage of fluid | 8 | 8-144.2 |  | 
																			
											| Other operations on the intestine | 7 | 5-469.e3 |  | 
																			
											| Use of a face, nasal, or laryngeal mask for mechanical ventilation | 7 | 8-706 |  | 
																			
											| Other operations on the stomach | 6 | 5-449.e3 |  | 
																			
											| Interdisciplinary management for colonisation or infection with multiresistant germs (pathogens) | 6 | 8-987.11 |  | 
																			
											| Examination of the trachea and the bronchi by endoscopy | 5 | 1-620.10 |  | 
																			
											| Analysis of the amount of carbon monoxide taken in and given off by the lungs | 5 | 1-711 |  | 
																			
											| Surgical removal or destruction of diseased tissue in the stomach | 5 | 5-433.21 |  | 
																			
											| Treatment by the targeted insertion of a needle into the abdominal cavity with subsequent administration or removal of substances, e.g. fluid | 5 | 8-153 |  | 
																			
											| Cardiac or cardiopulmonary resuscitation | 5 | 8-771 |  | 
																			
											| Computed tomography of the head with contrast medium | 4 | 3-220 |  | 
																			
											| Other operations on the stomach | 4 | 5-449.d3 |  | 
																			
											| Insertion of a small tube (cannula) or catheter into the space between the lungs and ribs for the drainage of fluid | 4 | 8-144.0 |  | 
																			
											| Transfusion of blood plasma or plasma components or genetically engineered blood proteins | 4 | 8-810.x |  | 
																			
											| Transfusion of other plasma components or genetically engineered blood proteins | 4 | 8-812.60 |  | 
																			
											| Measurement of the brain waves - EEG | not specified | 1-207.0 |  | 
																			
											| Taking a tissue sample (biopsy) of the bone marrow without surgical incision | not specified | 1-424 |  | 
																			
											| Taking a tissue sample (biopsy) of the liver, biliary tract or the pancreas with a needle through the skin | not specified | 1-441.0 |  | 
																			
											| Taking a tissue sample (biopsy) of the lower digestive tract by endoscopy | not specified | 1-444.x |  | 
																			
											| Examination of the trachea and the bronchi by endoscopy | not specified | 1-620.0x |  | 
																			
											| Examination of the large intestine by endoscopy - colonoscopy | not specified | 1-650.1 |  | 
																			
											| Examination of the rectum by endoscopy | not specified | 1-654.1 |  | 
																			
											| Standard screening examination of elderly people | not specified | 1-771 |  | 
																			
											| Examination of a joint or of a bursa by taking a sample of fluid or tissue with a needle | not specified | 1-854.7 |  | 
																			
											| Computed tomography (CT) of the musculoskeletal system without contrast medium | not specified | 3-205 |  | 
																			
											| Computed tomography (CT) of the pelvis without contrast medium | not specified | 3-206 |  | 
																			
											| Other computed tomography (CT) without contrast medium | not specified | 3-20x |  | 
																			
											| Computed tomography of the pelvis with contrast medium | not specified | 3-226 |  | 
																			
											| Other operations on the oesophagus | not specified | 5-429.a |  | 
																			
											| Other operations on the oesophagus | not specified | 5-429.d |  | 
																			
											| Other operations on the oesophagus | not specified | 5-429.e |  | 
																			
											|  | not specified | 5-42a.2 |  | 
																			
											| Surgical removal or destruction of diseased tissue in the stomach | not specified | 5-433.52 |  | 
																			
											| Surgical removal or destruction of diseased tissue in the small intestine | not specified | 5-451.92 |  | 
																			
											| Surgical removal or destruction of diseased tissue in the small intestine | not specified | 5-451.x1 |  | 
																			
											| Surgical removal or destruction of diseased tissue in the large intestine | not specified | 5-452.62 |  | 
																			
											| Surgical removal or destruction of diseased tissue in the large intestine | not specified | 5-452.63 |  | 
																			
											| Surgical removal or destruction of diseased tissue in the large intestine | not specified | 5-452.81 |  | 
																			
											| Surgical removal or destruction of diseased tissue in the large intestine | not specified | 5-452.a0 |  | 
																			
											| Operation on the biliary tract during gastroscopy | not specified | 5-513.b |  | 
																			
											| Surgical creation of a connection between the urinary bladder and skin of the abdomen for artificial urinary drainage | not specified | 5-572.1 |  | 
																			
											| Other surgical incision into the skin or subcutaneous tissues | not specified | 5-892.09 |  | 
																			
											| Simple surgical closure of the skin or the subcutaneous tissues after injuries, e.g. with a suture | not specified | 5-900.04 |  | 
																			
											| Operation using lasers | not specified | 5-985.0 |  | 
																			
											|  | not specified | 8-018.1 |  | 
																			
											| Exchange or removal of a feeding tube inserted into the stomach through the skin | not specified | 8-123.1 |  | 
																			
											| Injection or administration of medicines into the urinary bladder | not specified | 8-132.3 |  | 
																			
											| Exchange or removal of a urinary catheter through the abdominal wall | not specified | 8-133.0 |  | 
																			
											| Treatment by the targeted insertion of a needle into the chest with subsequent administration or removal of substances, e.g. fluid | not specified | 8-152.2 |  | 
																			
											| Treatment by the targeted insertion of a needle into a joint with subsequent administration or removal of substances, e.g. fluid | not specified | 8-158.h |  | 
																			
											| Radiotherapy with high-energy beams for cancer - high voltage radiotherapy | not specified | 8-522.90 |  | 
																			
											| Radiotherapy with high-energy beams for cancer - high voltage radiotherapy | not specified | 8-522.91 |  | 
																			
											|  | not specified | 8-52e |  | 
																			
											| Interdisciplinary measures for early postoperative treatment and early rehabilitation of ill elderly people | not specified | 8-550.0 |  | 
																			
											| Treatment of cardiac arrhythmias with electric shocks - defibrillation | not specified | 8-640.x |  | 
																			
											| Transfusion of blood, red blood cells or platelets from a donor to a recipient | not specified | 8-800.c1 |  | 
																			
											| Transfusion of blood, red blood cells or platelets from a donor to a recipient | not specified | 8-800.g1 |  | 
																			
											| Transfusion of blood, red blood cells or platelets from a donor to a recipient | not specified | 8-800.g3 |  | 
																			
											| Transfusion of other plasma components or genetically engineered blood proteins | not specified | 8-812.51 |  | 
																			
											| Transfusion of other plasma components or genetically engineered blood proteins | not specified | 8-812.80 |  | 
																			
											|  | not specified | 8-98g.13 |  | 
																			
											|  | not specified | 8-98g.14 |  |