| Service | Number of cases | OPS key | Info | 
																			
											| Operation with the smallest possible incision into the skin and minimal tissue damage (minimally invasive) | 177 | 5-986.x |  | 
																			
											| Comprehensive pain control for acute pain | 165 | 8-919 |  | 
																			
											| Treatment of pain by the introduction of a liquid anaesthetic around other nerves outside the brain and spinal cord | 164 | 8-915 |  | 
																			
											| Other open joint surgery | 123 | 5-809.0h |  | 
																			
											| Surgical transplantation or transposition of bone tissue | 102 | 5-784.0k |  | 
																			
											| Open surgical procedure on a joint | 100 | 5-800.5h |  | 
																			
											| Surgical implantation of artificial knee joint | 100 | 5-822.j1 |  | 
																			
											| Other operations on the muscles, tendons, their connective tissue sheaths or bursae | 100 | 5-859.18 |  | 
																			
											| Operation on the kneecap (patella) or its ligaments | 95 | 5-804.5 |  | 
																			
											| Open surgical procedure on a joint | 79 | 5-800.6h |  | 
																			
											| Operation on the kneecap (patella) or its ligaments | 62 | 5-804.0 |  | 
																			
											| Surgical implantation of artificial knee joint | 61 | 5-822.01 |  | 
																			
											| Reconstructive operations on the connective tissue sheaths of muscles | 40 | 5-856.38 |  | 
																			
											| Operation using aids for optical magnification, e.g. magnifying spectacles, operating microscope | 29 | 5-984 |  | 
																			
											| Surgical removal of diseased bone or joint tissue in the spine | 24 | 5-832.4 |  | 
																			
											| Surgical implantation of artificial knee joint | 20 | 5-822.81 |  | 
																			
											| Surgical access to the lumbar spine, sacrum or coccyx | 19 | 5-032.00 |  | 
																			
											| Open surgical procedure on a joint | 19 | 5-800.8h |  | 
																			
											| Other operations on the spine | 16 | 5-839.60 |  | 
																			
											| Surgical removal of diseased intervertebral disc tissue | 15 | 5-831.2 |  | 
																			
											| Surgical access to the lumbar spine, sacrum or coccyx | 13 | 5-032.20 |  | 
																			
											| Surgical removal of diseased intervertebral disc tissue | 12 | 5-831.3 |  | 
																			
											| Surgical removal of diseased intervertebral disc tissue | 10 | 5-831.0 |  | 
																			
											| Surgical removal of diseased bone or joint tissue in the spine | 10 | 5-832.9 |  | 
																			
											| Procedures on the spine for the treatment of pain, with the smallest possible incision into the skin and minimal tissue damage (minimally invasive) | 10 | 5-83a.02 |  | 
																			
											| Pain control by injecting an anaesthetic into a joint of the spine | 10 | 8-917.13 |  | 
																			
											| Other operations to secure or restore the function of a joint | 9 | 5-829.e |  | 
																			
											| Other operations on the spine | 9 | 5-839.5 |  | 
																			
											| Surgical access to the lumbar spine, sacrum or coccyx | 8 | 5-032.10 |  | 
																			
											| Surgical fixation of vertebrae using devices such as screws or plates | 8 | 5-835.b0 |  | 
																			
											|  | 8 | 5-83b.70 |  | 
																			
											| Surgical access to the lumbar spine, sacrum or coccyx | 7 | 5-032.40 |  | 
																			
											| Surgical access to the lumbar spine, sacrum or coccyx | 7 | 5-032.7 |  | 
																			
											| Open surgical procedure on a joint | 7 | 5-800.ah |  | 
																			
											| Surgical removal of diseased bone or joint tissue in the spine | 7 | 5-832.6 |  | 
																			
											| Surgical removal of bone tissue for purposes of transplantation | 6 | 5-783.0x |  | 
																			
											| Surgical removal of diseased intervertebral disc tissue | 6 | 5-831.9 |  | 
																			
											| Surgical removal of diseased bone or joint tissue in the spine | 6 | 5-832.7 |  | 
																			
											| Surgical fixation of vertebrae using devices such as screws or plates | 6 | 5-835.9 |  | 
																			
											| Surgical stiffening of the spine - spondylodesis | 6 | 5-836.30 |  | 
																			
											|  | 6 | 5-83b.50 |  | 
																			
											| Surgical access to the area between the head and neck or to the cervical spine | 5 | 5-030.70 |  | 
																			
											| Surgical access to the lumbar spine, sacrum or coccyx | 5 | 5-032.01 |  | 
																			
											| Surgical implantation of artificial knee joint | 5 | 5-822.91 |  | 
																			
											| Surgical removal of diseased bone or joint tissue in the spine | 5 | 5-832.0 |  | 
																			
											| Surgical stiffening of the spine - spondylodesis | 5 | 5-836.50 |  | 
																			
											| Other operations on the spine | 5 | 5-839.61 |  | 
																			
											|  | 5 | 5-98d.0 |  | 
																			
											| Computed tomography of the chest with contrast medium | 4 | 3-222 |  | 
																			
											| Magnetic resonance imaging (MRI) of the spine and spinal cord without contrast medium | 4 | 3-802 |  | 
																			
											| Surgical access to the lumbar spine, sacrum or coccyx | 4 | 5-032.21 |  | 
																			
											| Surgical access to the lumbar spine, sacrum or coccyx | 4 | 5-032.30 |  | 
																			
											| Surgical access to the lumbar spine, sacrum or coccyx | 4 | 5-032.41 |  | 
																			
											| Surgical access to the lumbar spine, sacrum or coccyx | 4 | 5-032.6 |  | 
																			
											| Open surgical procedure on a joint | 4 | 5-800.1h |  | 
																			
											| Surgical implantation of artificial knee joint | 4 | 5-822.h1 |  | 
																			
											| Other operations to secure or restore the function of a joint | 4 | 5-829.m |  | 
																			
											| Other operations on the spine | 4 | 5-839.10 |  | 
																			
											|  | 4 | 9-984.6 |  | 
																			
											|  | 4 | 9-984.7 |  | 
																			
											| Measurement of the electrical activity of the muscles - EMG | not specified | 1-205 |  | 
																			
											| Examination of nerve conduction - ENG | not specified | 1-206 |  | 
																			
											| Examination of the left side of the heart with a tube (catheter) inserted into the heart via an artery | not specified | 1-275.0 |  | 
																			
											| Investigation of the activity of the heart and lungs during sleep | not specified | 1-791 |  | 
																			
											| Computed tomography (CT) of the head without contrast medium | not specified | 3-200 |  | 
																			
											| Computed tomography (CT) of the spine and the spinal cord without contrast medium | not specified | 3-203 |  | 
																			
											| Computed tomography (CT) of the musculoskeletal system without contrast medium | not specified | 3-205 |  | 
																			
											| Surgical access to the area between the head and neck or to the cervical spine | not specified | 5-030.30 |  | 
																			
											| Surgical access to the area between the head and neck or to the cervical spine | not specified | 5-030.40 |  | 
																			
											| Surgical access to the area between the head and neck or to the cervical spine | not specified | 5-030.71 |  | 
																			
											| Surgical access to the area between the head and neck or to the cervical spine | not specified | 5-030.72 |  | 
																			
											| Surgical access to the lumbar spine, sacrum or coccyx | not specified | 5-032.02 |  | 
																			
											| Surgical access to the lumbar spine, sacrum or coccyx | not specified | 5-032.22 |  | 
																			
											| Surgical access to the lumbar spine, sacrum or coccyx | not specified | 5-032.42 |  | 
																			
											| Surgical incision into the spinal canal | not specified | 5-033.2 |  | 
																			
											| Reconstructive operations on the spinal cord or spinal meninges | not specified | 5-036.8 |  | 
																			
											| Removal of the devices used to fix bone fragments, e.g. in fractures | not specified | 5-787.1h |  | 
																			
											| Removal of the devices used to fix bone fragments, e.g. in fractures | not specified | 5-787.1k |  | 
																			
											| Removal of the devices used to fix bone fragments, e.g. in fractures | not specified | 5-787.3k |  | 
																			
											| Removal of the devices used to fix bone fragments, e.g. in fractures | not specified | 5-787.kk |  | 
																			
											| Open surgical procedure on a joint | not specified | 5-800.9x |  | 
																			
											| Surgical procedure on a joint by endoscopy | not specified | 5-810.2h |  | 
																			
											| Operation on the synovium by endoscopy (arthroscopy) | not specified | 5-811.2h |  | 
																			
											| Operation on the articular cartilage or on the cartilage discs (menisci) by endoscopy (arthroscopy) | not specified | 5-812.5 |  | 
																			
											| Operation on the articular cartilage or on the cartilage discs (menisci) by endoscopy (arthroscopy) | not specified | 5-812.eh |  | 
																			
											| Surgical implantation of artificial knee joint | not specified | 5-822.84 |  | 
																			
											| Surgical implantation of artificial knee joint | not specified | 5-822.g1 |  | 
																			
											| Re-operation, exchange or removal of an artificial knee joint | not specified | 5-823.0 |  | 
																			
											| Re-operation, exchange or removal of an artificial knee joint | not specified | 5-823.1b |  | 
																			
											| Re-operation, exchange or removal of an artificial knee joint | not specified | 5-823.27 |  | 
																			
											| Other operations to secure or restore the function of a joint | not specified | 5-829.p |  | 
																			
											| Surgical stiffening of the spine - spondylodesis | not specified | 5-836.31 |  | 
																			
											| Other operations on the spine | not specified | 5-839.0 |  | 
																			
											| Other operations on the spine | not specified | 5-839.11 |  | 
																			
											| Other operations on the spine | not specified | 5-839.12 |  | 
																			
											| Other operations on the spine | not specified | 5-839.62 |  | 
																			
											| Other operations on the spine | not specified | 5-839.a0 |  | 
																			
											| Procedures on the spine for the treatment of pain, with the smallest possible incision into the skin and minimal tissue damage (minimally invasive) | not specified | 5-83a.2 |  | 
																			
											|  | not specified | 5-83b.30 |  | 
																			
											|  | not specified | 5-83b.31 |  | 
																			
											|  | not specified | 5-83b.51 |  | 
																			
											|  | not specified | 5-83b.52 |  | 
																			
											|  | not specified | 5-83b.71 |  | 
																			
											| Surgical removal of diseased tissue from the skin or subcutaneous tissues | not specified | 5-894.1x |  | 
																			
											| Revision operations | not specified | 5-983 |  | 
																			
											| Injection or administration of medicines into the urinary bladder | not specified | 8-132.1 |  | 
																			
											| Transfusion of blood, red blood cells or platelets from a donor to a recipient | not specified | 8-800.c0 |  | 
																			
											| Treatment of the heart and/or the coronary arteries with access through a tube (catheter) along the blood vessels | not specified | 8-837.00 |  | 
																			
											| Treatment of the heart and/or the coronary arteries with access through a tube (catheter) along the blood vessels | not specified | 8-837.m0 |  | 
																			
											| Additional information on materials used | not specified | 8-83b.0c |  | 
																			
											| 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 |  | 
																			
											|  | not specified | 8-98g.11 |  | 
																			
											|  | not specified | 9-984.8 |  | 
																			
											|  | not specified | 9-984.9 |  | 
																			
											|  | not specified | 9-984.b |  |