| Service | Number of cases | OPS number | Info | 
																			
											| Measurement of the electrical activity of the heart without a tube (catheter) inserted into the heart via an artery | not specified | 1-266 |  | 
																			
											| Examination of the right side of the heart with a tube (catheter) inserted into the heart via a vein | not specified | 1-273 |  | 
																			
											| Examination of the left side of the heart with a tube (catheter) inserted into the heart via an artery | 199 | 1-275 |  | 
																			
											| Other investigations of the heart or blood vessels by means of a tube (catheter) | not specified | 1-279 |  | 
																			
											| Ultrasound of the heart (echocardiography) through the oesophagus - TEE | 4 | 3-052 |  | 
																			
											| Insertion of a cardiac pacemaker or of a defibrillator | not specified | 5-377 |  | 
																			
											| Removal, exchange or correction of a pacemaker or defibrillator | 22 | 5-378 |  | 
																			
											| Use of a cardiac pacemaker that can be used in a magnetic resonance tomography unit | not specified | 5-934 |  | 
																			
											| Additional information on materials used | 10 | 8-83b |  | 
																			
											| 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 |  | 
																			
											| Radio-controlled cardiological telemetry | not specified | 8-933 |  | 
																			
											| Need for care | 18 | 9-984 |  |