| 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 | 412 | 8-930 |  | 
																			
											|  | 396 | 8-98g.10 |  | 
																			
											| Measurement of brain waves triggered by targeted stimuli (evoked potentials) | 256 | 1-208.8 |  | 
																			
											| Use of natural or artificial light for therapeutic purposes - light therapy | 241 | 8-560.2 |  | 
																			
											| Examination of the oesophagus, stomach and duodenum by endoscopy | 87 | 1-632.0 |  | 
																			
											| Anaesthesia with administration of an anaesthetic into a vein | 86 | 8-900 |  | 
																			
											| Taking a tissue sample (biopsy) of the upper digestive tract, biliary tract or the pancreas by endoscopy | 61 | 1-440.a |  | 
																			
											| Measurement of brain waves triggered by targeted stimuli (evoked potentials) | 59 | 1-208.1 |  | 
																			
											| Examination of the large intestine by endoscopy - colonoscopy | 56 | 1-650.2 |  | 
																			
											| Taking a tissue sample (biopsy) of the lower digestive tract by endoscopy | 40 | 1-444.7 |  | 
																			
											| Investigation of an allergy by specifically triggering an allergic reaction | 39 | 1-700 |  | 
																			
											| Measurement of the brain waves - EEG | 37 | 1-207.0 |  | 
																			
											|  | 30 | 8-98g.11 |  | 
																			
											| Examination of the cerebrospinal fluid spaces | 29 | 1-204.2 |  | 
																			
											| Taking a tissue sample (biopsy) of the upper digestive tract, biliary tract or the pancreas by endoscopy | 23 | 1-440.9 |  | 
																			
											| Intestinal lavage | 23 | 8-121 |  | 
																			
											|  | 19 | 1-999.3 |  | 
																			
											| Taking a tissue sample (biopsy) of the lower digestive tract by endoscopy | 18 | 1-444.6 |  | 
																			
											| Magnetic resonance imaging (MRI) of the head with contrast medium | 15 | 3-820 |  | 
																			
											| Artificial ventilation of children and adolescents | 14 | 8-712.1 |  | 
																			
											| Examination to detect a metabolic disorder, in which a specific substance (e.g. glucose) is given | 11 | 1-760 |  | 
																			
											| Simple surgical closure of the skin or the subcutaneous tissues after injuries, e.g. with a suture | 11 | 5-900.04 |  | 
																			
											| Magnetic resonance imaging (MRI) of the abdominal cavity with contrast medium | 10 | 3-825 |  | 
																			
											| Care of a new-born baby after birth | 9 | 9-262.0 |  | 
																			
											|  | 9 | 9-984.8 |  | 
																			
											| Computed tomography (CT) of the head without contrast medium | 8 | 3-200 |  | 
																			
											| Magnetic resonance imaging (MRI) of the head without contrast medium | 8 | 3-800 |  | 
																			
											| Surgical removal of the appendix - appendicectomy | 6 | 5-470.11 |  | 
																			
											| Administration of medicines or salt solutions through the blood vessels in newborn babies | 6 | 8-010.3 |  | 
																			
											|  | 6 | 9-984.6 |  | 
																			
											|  | 6 | 9-984.9 |  | 
																			
											| Mechanical ventilation of newborn babies and infants | 5 | 8-711.41 |  | 
																			
											|  | 5 | 9-984.7 |  | 
																			
											| Examination of the liver by taking a sample of fluid or tissue with a needle | 4 | 1-845 |  | 
																			
											| X-rays of the urinary bladder and the urethra with contrast medium when passing urine (voiding) | 4 | 3-13e |  | 
																			
											| Computed tomography of the head with contrast medium | 4 | 3-220 |  | 
																			
											| Magnetic resonance imaging (MRI) of the abdominal cavity without contrast medium | 4 | 3-804 |  | 
																			
											| Transfusion of blood, red blood cells or platelets from a donor to a recipient | 4 | 8-800.c0 |  | 
																			
											| Measurement of the brain waves - EEG | not specified | 1-207.1 |  | 
																			
											| 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 with a fine needle under ultrasound guidance | not specified | 1-446 |  | 
																			
											| Examination of the large intestine by endoscopy - colonoscopy | not specified | 1-650.1 |  | 
																			
											| Examination of the rectum by endoscopy | not specified | 1-654.0 |  | 
																			
											| Examination of the abdominal cavity or its organs by endoscopy | not specified | 1-694 |  | 
																			
											| X-rays of the patency of the stomach and intestine | not specified | 3-13b |  | 
																			
											| Computed tomography (CT) of the spine and the spinal cord without contrast medium | not specified | 3-203 |  | 
																			
											| Computed tomography of the chest with contrast medium | not specified | 3-222 |  | 
																			
											| Magnetic resonance imaging (MRI) of the spine and spinal cord without contrast medium | not specified | 3-802 |  | 
																			
											| Magnetic resonance imaging (MRI) of the biliary tract and pancreatic ducts with contrast medium | not specified | 3-843.0 |  | 
																			
											| Other operations on the tongue | not specified | 5-259.1 |  | 
																			
											| Surgical removal or destruction of diseased tissue in the large intestine | not specified | 5-452.61 |  | 
																			
											| Surgical removal or destruction of diseased tissue in the large intestine | not specified | 5-452.62 |  | 
																			
											| Surgical incision into the rectum | not specified | 5-480 |  | 
																			
											| Other operations on the anus | not specified | 5-499.0 |  | 
																			
											| Surgical incision into the ovary | not specified | 5-650.4 |  | 
																			
											| Surgical incision of a pilonidal sinus | not specified | 5-891 |  | 
																			
											| Other surgical incision into the skin or subcutaneous tissues | not specified | 5-892.14 |  | 
																			
											| Administration of medicines according to List 4 of the Catalogue of Procedures | not specified | 6-004.02 |  | 
																			
											| Specific procedure in the treatment of an allergy, e.g. hyposensitisation | not specified | 8-030.0 |  | 
																			
											| Injection or administration of medicines into the urinary bladder | not specified | 8-132.x |  | 
																			
											| Others therapeutic procedures to influence the immune system | not specified | 8-547.x |  | 
																			
											| Mechanical ventilation of newborn babies and infants | not specified | 8-711.40 |  | 
																			
											| Oxygen administration to newborn babies | not specified | 8-720 |  | 
																			
											| Transfusion of blood plasma or plasma components or genetically engineered blood proteins | not specified | 8-810.w3 |  | 
																			
											| Transfusion of blood plasma or plasma components or genetically engineered blood proteins | not specified | 8-810.w4 |  | 
																			
											| Transfusion of blood plasma or plasma components or genetically engineered blood proteins | not specified | 8-810.w5 |  | 
																			
											| Transfusion of blood plasma or plasma components or genetically engineered blood proteins | not specified | 8-810.wa |  | 
																			
											| Compensation of fluid deficit in a newborn baby by injection of fluid into a vein | not specified | 8-811.0 |  | 
																			
											|  | not specified | 8-98g.12 |  | 
																			
											| Care of a new-born baby after birth | not specified | 9-262.1 |  | 
																			
											| Treatment procedure to maintain and encourage practical everyday and social skills - psychosocial intervention | not specified | 9-401.22 |  | 
																			
											| Treatment procedure to maintain and encourage practical everyday and social skills - psychosocial intervention | not specified | 9-401.23 |  | 
																			
											| Patient education | not specified | 9-500.0 |  | 
																			
											| Patient education | not specified | 9-500.1 |  | 
																			
											|  | not specified | 9-984.b |  |