| Service | Number of cases | OPS key | Info | 
																			
											| Surgical incision into the eardrum (tympanic membrane) | 126 | 5-200.5 |  | 
																			
											| Surgical removal of the (enlarged) adenoids (without removal of the tonsils) | 124 | 5-285.0 |  | 
																			
											| Intestinal lavage | 118 | 8-121 |  | 
																			
											| Measurement of the brain waves - EEG | 85 | 1-207.0 |  | 
																			
											| Measurement of the brain waves - EEG | 84 | 1-207.1 |  | 
																			
											| Measurement of brain waves triggered by targeted stimuli (evoked potentials) | 76 | 1-208.1 |  | 
																			
											|  | 67 | 9-984.8 |  | 
																			
											| Surgical repair of an inguinal hernia | 48 | 5-530.1 |  | 
																			
											|  | 42 | 9-984.b |  | 
																			
											| Surgical repair of a umbilical hernia | 38 | 5-534.1 |  | 
																			
											|  | 38 | 9-984.7 |  | 
																			
											| Administration of medicines or salt solutions through the blood vessels in newborn babies | 34 | 8-010.3 |  | 
																			
											| Use of natural or artificial light for therapeutic purposes - light therapy | 28 | 8-560.2 |  | 
																			
											|  | 25 | 9-984.9 |  | 
																			
											| Patient education | 24 | 9-500.0 |  | 
																			
											| Other reconstructive operations on the urinary bladder | 23 | 5-578.80 |  | 
																			
											| Surgical removal of the palatine tonsils (without removal of the adenoids) - tonsillectomy without adenoidectomy | 22 | 5-281.5 |  | 
																			
											| Examination of the cerebrospinal fluid spaces | 21 | 1-204.2 |  | 
																			
											| Surgical removal of the appendix - appendicectomy | 20 | 5-470.10 |  | 
																			
											| Surgical repair of an inguinal hernia | 18 | 5-530.00 |  | 
																			
											| Surgical removal of the tissue around the epididymis | 16 | 5-631.2 |  | 
																			
											|  | 16 | 9-984.6 |  | 
																			
											| Surgical removal of the appendix - appendicectomy | 13 | 5-470.0 |  | 
																			
											| Operation on the foreskin of the penis | 13 | 5-640.3 |  | 
																			
											| Other operations on the urethra or the surrounding tissue | 12 | 5-589.0 |  | 
																			
											| Surgical removal of the lens of the eye without the lens capsule | 11 | 5-144.3a |  | 
																			
											| Surgical removal of the (enlarged) adenoids (without removal of the tonsils) | 11 | 5-285.1 |  | 
																			
											| Revision operations | 11 | 5-983 |  | 
																			
											| Simple surgical closure of the skin or the subcutaneous tissues after injuries, e.g. with a suture | 10 | 5-900.04 |  | 
																			
											| Measurement of brain waves triggered by targeted stimuli (evoked potentials) | 9 | 1-208.0 |  | 
																			
											| X-rays of the urinary bladder and the urethra with contrast medium when passing urine (voiding) | 9 | 3-13e |  | 
																			
											| Surgical incision into the eardrum (tympanic membrane) | 9 | 5-200.4 |  | 
																			
											| Time-consuming plaster casts | 9 | 8-310.x |  | 
																			
											| Surgical incision into or removal of tissue from the anus | 8 | 5-490.0 |  | 
																			
											| Correction of a skeletal deformity manually or with appliances, with subsequent immobilisation of the affected part of the skeleton, e.g. with plaster cast | 8 | 8-211 |  | 
																			
											| Clinical examination under general anaesthetic | 7 | 1-100 |  | 
																			
											| Other operations on the retina | 7 | 5-156.9 |  | 
																			
											| Surgical removal or destruction of diseased tissue in the abdominal wall | 7 | 5-542.0 |  | 
																			
											| Surgical repair of an abnormal opening of the urethra on the lower surface of the penis (hypospadias) in a man | 7 | 5-645.1 |  | 
																			
											| Surgical repair of an abnormal opening of the urethra on the lower surface of the penis (hypospadias) in a man | 7 | 5-645.21 |  | 
																			
											| Division of muscles, tendons or their connective tissue sheaths | 7 | 5-851.29 |  | 
																			
											| Dressings for large areas of skin or serious skin diseases | 7 | 8-191.5 |  | 
																			
											| Surgical repair of an abnormal opening of the urethra on the lower surface of the penis (hypospadias) in a man | 6 | 5-645.3 |  | 
																			
											| Surgical division of adhesions on the ovary and fallopian tube without the aid of equipment for optical magnification | 6 | 5-657.70 |  | 
																			
											| Time-consuming plaster casts | 6 | 8-310.3 |  | 
																			
											| Surgical treatment of abnormal passages in the region of the anus (anal fistula) | 5 | 5-491.10 |  | 
																			
											| Surgical fixation of the testicle in the scrotum | 5 | 5-624.4 |  | 
																			
											| Treatment by injecting a medicine into an organ or tissue, or removal of excess fluid (effusion) e.g. from the joints | 5 | 8-020.5 |  | 
																			
											| Non-surgical reduction of a dislocated joint without surgical fixation of the bone using devices such as screws or plates | 5 | 8-201.g |  | 
																			
											| Examination to detect a metabolic disorder, in which a specific substance (e.g. glucose) is given | 4 | 1-760 |  | 
																			
											|  | 4 | 1-945.0 |  | 
																			
											|  | 4 | 1-945.1 |  | 
																			
											| Surgery for the opacity of a lens after a cataract operation (secondary cataract) | 4 | 5-142.1 |  | 
																			
											| Surgical repair of an abnormal opening of the urethra on the lower surface of the penis (hypospadias) in a man | 4 | 5-645.0 |  | 
																			
											| Surgical repair of an abnormal opening of the urethra on the lower surface of the penis (hypospadias) in a man | 4 | 5-645.20 |  | 
																			
											| Surgical removal of diseased tissue from the skin or subcutaneous tissues | 4 | 5-894.14 |  | 
																			
											| Operation using aids for optical magnification, e.g. magnifying spectacles, operating microscope | 4 | 5-984 |  | 
																			
											| Compensation of fluid deficit in a newborn baby by injection of fluid into a vein | 4 | 8-811.0 |  | 
																			
											|  | 4 | 9-984.a |  | 
																			
											| Examination of the cerebrospinal fluid spaces | not specified | 1-204.1 |  | 
																			
											| Examination of the cerebrospinal fluid spaces | not specified | 1-204.5 |  | 
																			
											| Measurement of oesophageal acidity | not specified | 1-316.11 |  | 
																			
											| Measurement of urethral width | not specified | 1-336 |  | 
																			
											| Examination of the abdominal cavity or its organs by endoscopy | not specified | 1-694 |  | 
																			
											| Examination of the eye or associated structures such as the eyelids or eye muscles by taking a sample of fluid or tissue with a needle | not specified | 1-840.1 |  | 
																			
											| Comprehensive assessment in neurological diseases of children and adolescents | not specified | 1-942.1 |  | 
																			
											| Complex differential diagnostic sonography of the vascular system with quantitative evaluation | not specified | 3-035 |  | 
																			
											| X-rays of the large intestine with contrast medium enema | not specified | 3-13a |  | 
																			
											| Partial surgical removal of the adrenal gland | not specified | 5-071.0x |  | 
																			
											| Suturing the conjunctiva of the eye | not specified | 5-115 |  | 
																			
											| Surgical removal of a foreign body from the cornea of the eye | not specified | 5-120.2 |  | 
																			
											| Suturing of the cornea of the eye | not specified | 5-124 |  | 
																			
											| Reduction of the intraocular pressure by means of a drainage operation | not specified | 5-131.01 |  | 
																			
											| Reduction of the intraocular pressure by means of a drainage operation | not specified | 5-131.40 |  | 
																			
											| Reduction of the intraocular pressure by improving aqueous humour circulation | not specified | 5-133.0 |  | 
																			
											| Other operations on the iris | not specified | 5-137.2 |  | 
																			
											| Operation on the sclera of the eye | not specified | 5-138.10 |  | 
																			
											| Other operations on the sclera, of the anterior chamber, of the iris, or the ciliary body of the eye | not specified | 5-139.0 |  | 
																			
											| Other operations on the sclera, of the anterior chamber, of the iris, or the ciliary body of the eye | not specified | 5-139.10 |  | 
																			
											| Other operations on the sclera, of the anterior chamber, of the iris, or the ciliary body of the eye | not specified | 5-139.11 |  | 
																			
											| Other operations on the sclera, of the anterior chamber, of the iris, or the ciliary body of the eye | not specified | 5-139.x |  | 
																			
											| Insertion or exchange of an artificial lens of the eye | not specified | 5-146.0b |  | 
																			
											| Other operations on the lens of the eye | not specified | 5-149.x |  | 
																			
											| Fixation of the retina after retinal detachment, by scleral buckling | not specified | 5-152.2 |  | 
																			
											| Other operations to fix the retina after detachment | not specified | 5-154.0 |  | 
																			
											| Other operations to fix the retina after detachment | not specified | 5-154.2 |  | 
																			
											| Other operations to fix the retina after detachment | not specified | 5-154.4 |  | 
																			
											| Surgical destruction of diseased tissue in the retina or choroid of the eye | not specified | 5-155.0 |  | 
																			
											| Surgical destruction of diseased tissue in the retina or choroid of the eye | not specified | 5-155.1 |  | 
																			
											| Other operations on the retina | not specified | 5-156.0 |  | 
																			
											| Surgical removal and subsequent replacement of the vitreous of the eye with access via the ciliary body | not specified | 5-158.00 |  | 
																			
											| Surgical removal and subsequent replacement of the vitreous of the eye with access via the ciliary body | not specified | 5-158.06 |  | 
																			
											| Surgical removal and subsequent replacement of the vitreous of the eye with access via the ciliary body | not specified | 5-158.10 |  | 
																			
											| Surgical removal and subsequent replacement of the vitreous of the eye with access via the ciliary body | not specified | 5-158.14 |  | 
																			
											| Surgical removal and subsequent replacement of the vitreous of the eye with access via the ciliary body | not specified | 5-158.21 |  | 
																			
											| Surgical removal and subsequent replacement of the vitreous of the eye with access via the ciliary body | not specified | 5-158.44 |  | 
																			
											| Removal of the eyeball | not specified | 5-163.11 |  | 
																			
											| Surgical removal or destruction of diseased tissue in the outer ear | not specified | 5-181.3 |  | 
																			
											| Surgical closure of the eardrum (tympanic membrane) or reconstructive operations on the ossicles (small bones) of the ear | not specified | 5-195.a0 |  | 
																			
											| Operation on the inferior nasal concha | not specified | 5-215.3 |  | 
																			
											| Surgical reduction of a broken nose | not specified | 5-216.0 |  | 
																			
											| Operation on the ethmoid bone or on the sphenoid sinus | not specified | 5-222.21 |  | 
																			
											| Other operations on the tongue | not specified | 5-259.1 |  | 
																			
											| Other operations on the tongue | not specified | 5-259.2 |  | 
																			
											| Surgical incision and drainage of fluid from the mouth, jaw or facial region | not specified | 5-270.5 |  | 
																			
											| Surgical removal or destruction of the (diseased) hard or soft palate | not specified | 5-272.1 |  | 
																			
											| Surgical removal of the tonsils and adenoids | not specified | 5-282.0 |  | 
																			
											| Other operations on the tonsils or adenoids | not specified | 5-289.2 |  | 
																			
											| Operation on usually fluid-filled cavities in the neck, which have not completely closed since birth (remnants of the branchial cleft) | not specified | 5-291.1 |  | 
																			
											| Reconstructive operations on the trachea | not specified | 5-316.2 |  | 
																			
											| Surgical incision into the chest wall or pleura | not specified | 5-340.0 |  | 
																			
											| Surgical incision into the chest wall or pleura | not specified | 5-340.7 |  | 
																			
											| Reconstructive operations on the chest wall | not specified | 5-346.a0 |  | 
																			
											| Reconstructive operations on the chest wall | not specified | 5-346.a5 |  | 
																			
											| Other operations on blood vessels | not specified | 5-399.7 |  | 
																			
											| Surgical removal of individual lymph nodes or lymphatic vessels | not specified | 5-401.50 |  | 
																			
											| Surgical removal of the spleen | not specified | 5-413.02 |  | 
																			
											| Surgical removal of the spleen | not specified | 5-413.x |  | 
																			
											| Operation on the pylorus of the stomach | not specified | 5-432.00 |  | 
																			
											| Other operations on the intestine | not specified | 5-469.10 |  | 
																			
											| Other operations on the intestine | not specified | 5-469.12 |  | 
																			
											| Other operations on the intestine | not specified | 5-469.20 |  | 
																			
											| Other operations on the intestine | not specified | 5-469.21 |  | 
																			
											| Other operations on the intestine | not specified | 5-469.d3 |  | 
																			
											| Surgical removal of the appendix - appendicectomy | not specified | 5-470.11 |  | 
																			
											| Surgical removal of the appendix - appendicectomy | not specified | 5-470.2 |  | 
																			
											| Removal of the appendix during another operation | not specified | 5-471.0 |  | 
																			
											| Surgical incision into or removal of tissue from the anus | not specified | 5-490.1 |  | 
																			
											| Surgical treatment of abnormal passages in the region of the anus (anal fistula) | not specified | 5-491.11 |  | 
																			
											| Surgical treatment of abnormal passages in the region of the anus (anal fistula) | not specified | 5-491.12 |  | 
																			
											| Corrective surgery for congenital malformations of the rectum and anus | not specified | 5-495.01 |  | 
																			
											| Corrective surgery for congenital malformations of the rectum and anus | not specified | 5-495.20 |  | 
																			
											| Other operations on the anus | not specified | 5-499.0 |  | 
																			
											| Other operations on the anus | not specified | 5-499.x |  | 
																			
											| Surgical repair of an inguinal hernia | not specified | 5-530.01 |  | 
																			
											| Surgical repair of a umbilical hernia | not specified | 5-534.03 |  | 
																			
											| Surgical repair of a hernial protrusion of the stomach | not specified | 5-535.1 |  | 
																			
											| Surgical repair of a congenital abdominal wall defect | not specified | 5-537.1 |  | 
																			
											| Surgical opening of the abdominal cavity or tissue lying behind (retroperitoneum) | not specified | 5-541.2 |  | 
																			
											| Surgical removal or destruction of diseased tissue in the abdominal wall | not specified | 5-542.3 |  | 
																			
											| Surgical removal or destruction of tissue in the abdominal cavity | not specified | 5-543.20 |  | 
																			
											| Surgical removal or destruction of tissue in the abdominal cavity | not specified | 5-543.42 |  | 
																			
											| Surgical creation of a connection between the urinary bladder and skin of the abdomen for artificial urinary drainage | not specified | 5-572.1 |  | 
																			
											| Other operations on the urethra or the surrounding tissue | not specified | 5-589.1 |  | 
																			
											| Other operations on the urethra or the surrounding tissue | not specified | 5-589.x |  | 
																			
											| Surgical removal of a testicle | not specified | 5-622.5 |  | 
																			
											| Surgical fixation of the testicle in the scrotum | not specified | 5-624.5 |  | 
																			
											| Surgical release and examination of an undescended testicle | not specified | 5-625.6 |  | 
																			
											| Surgical transposition of a testicle lying in the abdomen down into the scrotum | not specified | 5-626.2 |  | 
																			
											| Surgical insertion, exchange or removal of a testicular prosthesis | not specified | 5-628.4 |  | 
																			
											| Surgical treatment of a varicocele of the testicles or of a hydrocele in the region of the spermatic cord | not specified | 5-630.5 |  | 
																			
											| Surgical removal of the epididymis | not specified | 5-633.0 |  | 
																			
											| Operation on the foreskin of the penis | not specified | 5-640.1 |  | 
																			
											| Surgical removal or destruction of tissue in the ovary | not specified | 5-651.90 |  | 
																			
											| Surgical removal or destruction of tissue in the ovary | not specified | 5-651.92 |  | 
																			
											| Surgical incision into the external female reproductive organs | not specified | 5-710 |  | 
																			
											| Surgical incision into bony tissue because of sterile or infected contaminated bone disease | not specified | 5-780.6t |  | 
																			
											| Surgical removal of diseased bone tissue | not specified | 5-782.ag |  | 
																			
											| Surgical fixation of the bone fragments, e.g. in fractures, using devices such as screws or plates | not specified | 5-786.2 |  | 
																			
											| Surgical reduction of a dislocated joint | not specified | 5-79b.hg |  | 
																			
											| Open surgical procedure on a joint | not specified | 5-800.0k |  | 
																			
											| Open surgical procedure on a joint | not specified | 5-800.0m |  | 
																			
											| Open surgical procedure on a joint | not specified | 5-800.6k |  | 
																			
											| Open surgical procedure on a joint | not specified | 5-800.6m |  | 
																			
											| Surgical incision into the muscles, tendons or their connective tissue sheaths | not specified | 5-850.2a |  | 
																			
											| Surgical incision into the muscles, tendons or their connective tissue sheaths | not specified | 5-850.d5 |  | 
																			
											| Division of muscles, tendons or their connective tissue sheaths | not specified | 5-851.00 |  | 
																			
											| Removal of parts of muscles, tendons or their connective tissue sheaths | not specified | 5-852.60 |  | 
																			
											| Reconstructive operations on the muscles | not specified | 5-853.40 |  | 
																			
											| Reconstructive operations on the tendons | not specified | 5-854.09 |  | 
																			
											| Surgical incision into the breast | not specified | 5-881.1 |  | 
																			
											| Other surgical incision into the skin or subcutaneous tissues | not specified | 5-892.04 |  | 
																			
											| Other surgical incision into the skin or subcutaneous tissues | not specified | 5-892.08 |  | 
																			
											| Other surgical incision into the skin or subcutaneous tissues | not specified | 5-892.0d |  | 
																			
											| Other surgical incision into the skin or subcutaneous tissues | not specified | 5-892.15 |  | 
																			
											| Other surgical incision into the skin or subcutaneous tissues | not specified | 5-892.1b |  | 
																			
											| Other surgical incision into the skin or subcutaneous tissues | not specified | 5-892.1c |  | 
																			
											| Other surgical incision into the skin or subcutaneous tissues | not specified | 5-892.1d |  | 
																			
											| Surgical removal of diseased tissue from the skin or subcutaneous tissues | not specified | 5-894.0a |  | 
																			
											| Surgical removal of diseased tissue from the skin or subcutaneous tissues | not specified | 5-894.0c |  | 
																			
											| Surgical removal of diseased tissue from the skin or subcutaneous tissues | not specified | 5-894.1c |  | 
																			
											| Surgical removal of diseased tissue from the skin or subcutaneous tissues | not specified | 5-894.1d |  | 
																			
											| Surgical removal of diseased tissue from the skin or subcutaneous tissues | not specified | 5-894.xd |  | 
																			
											| Extensive surgical removal of diseased tissue from the skin or subcutaneous tissues | not specified | 5-895.26 |  | 
																			
											|  | not specified | 5-896.0d |  | 
																			
											|  | not specified | 5-896.0g |  | 
																			
											|  | not specified | 5-896.1a |  | 
																			
											| Surgical eradication of a pilonidal sinus | not specified | 5-897.0 |  | 
																			
											| Surgical eradication of a pilonidal sinus | not specified | 5-897.10 |  | 
																			
											| Operation on the nails | not specified | 5-898.4 |  | 
																			
											| Operation on the nails | not specified | 5-898.5 |  | 
																			
											| Simple surgical closure of the skin or the subcutaneous tissues after injuries, e.g. with a suture | not specified | 5-900.1c |  | 
																			
											| Free skin flap grafting [site of removal and nature of the graft] | not specified | 5-902.4g |  | 
																			
											| Temporary covering of soft tissue injuries with skin or artificial skin | not specified | 5-916.a0 |  | 
																			
											| Surgical separation of conjoined toes or the removal of extra toes | not specified | 5-918.1 |  | 
																			
											| Surgical separation of conjoined toes or the removal of extra toes | not specified | 5-918.3 |  | 
																			
											| Surgical wound care and removal of diseased tissue from the skin or subcutaneous tissues with burns or chemical burns | not specified | 5-921.04 |  | 
																			
											| Surgical wound care and removal of diseased tissue from the skin or subcutaneous tissues with burns or chemical burns | not specified | 5-921.05 |  | 
																			
											| Surgical wound care and removal of diseased tissue from the skin or subcutaneous tissues with burns or chemical burns | not specified | 5-921.08 |  | 
																			
											| Surgical wound care and removal of diseased tissue from the skin or subcutaneous tissues with burns or chemical burns | not specified | 5-921.09 |  | 
																			
											| Surgical wound care and removal of diseased tissue from the skin or subcutaneous tissues with burns or chemical burns | not specified | 5-921.0a |  | 
																			
											| Surgical wound care and removal of diseased tissue from the skin or subcutaneous tissues with burns or chemical burns | not specified | 5-921.0g |  | 
																			
											| Surgical wound care and removal of diseased tissue from the skin or subcutaneous tissues with burns or chemical burns | not specified | 5-921.0j |  | 
																			
											|  | not specified | 5-98c.0 |  | 
																			
											|  | not specified | 5-98c.1 |  | 
																			
											| Treatment by injecting a medicine into an organ or tissue, or removal of excess fluid (effusion) e.g. from the joints | not specified | 8-020.0 |  | 
																			
											| Removal of a foreign body by endoscopy | not specified | 8-100.8 |  | 
																			
											| Removal of a segment of intestine that has folded into another segment (intussusception) | not specified | 8-122.0 |  | 
																			
											| Injection or administration of medicines into the urinary bladder | not specified | 8-132.2 |  | 
																			
											| Exchange or removal of a urinary catheter through the abdominal wall | not specified | 8-133.1 |  | 
																			
											| Other procedure on the kidney, ureter, bladder or urethra | not specified | 8-139.00 |  | 
																			
											| 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.g |  | 
																			
											| 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 |  | 
																			
											| 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.k |  | 
																			
											| Other treatment by the targeted insertion of a needle with subsequent administration or removal of substances, e.g. fluid | not specified | 8-159.x |  | 
																			
											| Specific dressing techniques | not specified | 8-190.20 |  | 
																			
											| Dressings for large areas of skin or serious skin diseases | not specified | 8-191.x |  | 
																			
											| Mobilisation of a stiff joint under anaesthesia - brisement force | not specified | 8-210 |  | 
																			
											| Others therapeutic procedures to influence the immune system | not specified | 8-547.30 |  | 
																			
											| Effects of the nervous system by means of electrical impulses | not specified | 8-631.x |  | 
																			
											| Mechanical ventilation of newborn babies and infants | not specified | 8-711.41 |  | 
																			
											| Oxygen administration to newborn babies | not specified | 8-720 |  | 
																			
											| Transfusion of blood, red blood cells or platelets from a donor to a recipient | not specified | 8-800.c0 |  | 
																			
											| Transfusion of blood plasma or plasma components or genetically engineered blood proteins | not specified | 8-810.65 |  | 
																			
											| Transfusion of blood plasma or plasma components or genetically engineered blood proteins | not specified | 8-810.84 |  | 
																			
											| Transfusion of blood plasma or plasma components or genetically engineered blood proteins | not specified | 8-810.85 |  | 
																			
											| Transfusion of blood plasma or plasma components or genetically engineered blood proteins | not specified | 8-810.89 |  | 
																			
											| Transfusion of blood plasma or plasma components or genetically engineered blood proteins | not specified | 8-810.d5 |  | 
																			
											| Transfusion of blood plasma or plasma components or genetically engineered blood proteins | not specified | 8-810.d7 |  | 
																			
											| Transfusion of blood plasma or plasma components or genetically engineered blood proteins | not specified | 8-810.w2 |  | 
																			
											| Transfusion of blood plasma or plasma components or genetically engineered blood proteins | not specified | 8-810.x |  | 
																			
											| Monitoring of various functions of the nervous system during an operation | not specified | 8-925.00 |  |