| Service | Number of cases | OPS key | Info | 
																			
											| Operation on the inferior nasal concha | 173 | 5-215.1 |  | 
																			
											| Operation using lasers | 160 | 5-985.1 |  | 
																			
											| Operation using aids for optical magnification, e.g. magnifying spectacles, operating microscope | 92 | 5-984 |  | 
																			
											| Surgical removal or reconstruction of the nasal septum | 84 | 5-214.70 |  | 
																			
											| Surgical removal of the palatine tonsils (without removal of the adenoids) - tonsillectomy without adenoidectomy | 72 | 5-281.0 |  | 
																			
											| Surgical removal of the (enlarged) adenoids (without removal of the tonsils) | 66 | 5-285.0 |  | 
																			
											| Operation on the maxillary sinuses | 57 | 5-221.1 |  | 
																			
											| Operation using lasers | 51 | 5-985.2 |  | 
																			
											| Surgical removal of the palatine tonsils (without removal of the adenoids) - tonsillectomy without adenoidectomy | 45 | 5-281.5 |  | 
																			
											| Operation on several paranasal sinuses | 39 | 5-224.63 |  | 
																			
											| Surgical incision into the eardrum (tympanic membrane) | 36 | 5-200.5 |  | 
																			
											| Surgical removal or reconstruction of the nasal septum | 30 | 5-214.6 |  | 
																			
											| Examination of the oesophagus by endoscopy | 25 | 1-630.1 |  | 
																			
											| Examination of the larynx by endoscopy | 23 | 1-610.2 |  | 
																			
											| Surgical incision into the eardrum (tympanic membrane) | 20 | 5-200.4 |  | 
																			
											| Operation on the inferior nasal concha | 18 | 5-215.3 |  | 
																			
											| Revision operations | 18 | 5-983 |  | 
																			
											| Surgical removal or destruction of diseased tissue in the larynx | 17 | 5-300.2 |  | 
																			
											| 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 | 17 | 8-930 |  | 
																			
											| Examination of the larynx by endoscopy | 16 | 1-610.0 |  | 
																			
											| Surgical opening or drainage, from the oral cavity, of a pus-filled abscess in the throat | 8 | 5-280.0 |  | 
																			
											| Treatment of a nose bleed by packing with absorbent material (tamponade) | 8 | 8-500 |  | 
																			
											| Taking a tissue sample (biopsy) of the lower pharynx through a surgical incision | 7 | 1-547 |  | 
																			
											| Examination of the trachea and the bronchi by endoscopy | 7 | 1-620.10 |  | 
																			
											| Surgical closure of the eardrum (tympanic membrane) (type I) | 7 | 5-194.1 |  | 
																			
											| Complete, surgical removal of all the lymph nodes in the neck - neck dissection | 7 | 5-403.10 |  | 
																			
											| Examination of the oesophagus, stomach and duodenum by endoscopy | 6 | 1-632.0 |  | 
																			
											| Surgical clearance of the mastoid process | 6 | 5-203.1 |  | 
																			
											| Surgical removal or reconstruction of the nasal septum | 6 | 5-214.5 |  | 
																			
											| Operation on the ethmoid bone or on the sphenoid sinus | 6 | 5-222.21 |  | 
																			
											| Surgical removal of the tonsils and adenoids | 6 | 5-282.0 |  | 
																			
											| Insertion of a permanent, artificial tracheal opening | 6 | 5-312.0 |  | 
																			
											|  | 6 | 8-98f.0 |  | 
																			
											| Taking a tissue sample (biopsy) of the throat (pharynx) without surgical incision | 5 | 1-422.1 |  | 
																			
											|  | 5 | 1-611.00 |  | 
																			
											| Computed tomography of the neck with contrast medium | 5 | 3-221 |  | 
																			
											| Computed tomography of the abdomen with contrast medium | 5 | 3-225 |  | 
																			
											| Surgical closure of the eardrum (tympanic membrane) or reconstructive operations on the ossicles (small bones) of the ear | 5 | 5-195.b1 |  | 
																			
											| Reconstructive operations on the middle ear | 5 | 5-204.2 |  | 
																			
											| Operation on the ethmoid bone or on the sphenoid sinus | 5 | 5-222.20 |  | 
																			
											| Surgical removal of the palatine tonsils (without removal of the adenoids) - tonsillectomy without adenoidectomy | 5 | 5-281.1 |  | 
																			
											| Other operations on the tonsils or adenoids | 5 | 5-289.1 |  | 
																			
											| Operation on usually fluid-filled cavities in the neck, which have not completely closed since birth (remnants of the branchial cleft) | 5 | 5-291.1 |  | 
																			
											| Transfusion of blood, red blood cells or platelets from a donor to a recipient | 5 | 8-800.c0 |  | 
																			
											| Computed tomography of the chest with contrast medium | 4 | 3-222 |  | 
																			
											| Surgical clearance of the mastoid process | 4 | 5-203.0 |  | 
																			
											| Surgical incision into the nose | 4 | 5-211.0 |  | 
																			
											| Surgical removal of a salivary gland | 4 | 5-262.05 |  | 
																			
											| Surgical removal of a salivary gland | 4 | 5-262.40 |  | 
																			
											| Surgical removal of the palatine tonsils (without removal of the adenoids) - tonsillectomy without adenoidectomy | 4 | 5-281.2 |  | 
																			
											| Surgical removal of the (enlarged) adenoids (without removal of the tonsils) | 4 | 5-285.1 |  | 
																			
											| Other partial removal of the larynx | 4 | 5-302.1 |  | 
																			
											| Surgical removal of individual lymph nodes or lymphatic vessels | 4 | 5-401.00 |  | 
																			
											| Complete, surgical removal of all the lymph nodes in the neck - neck dissection | 4 | 5-403.02 |  | 
																			
											| Complete, surgical removal of all the lymph nodes in the neck - neck dissection | 4 | 5-403.20 |  | 
																			
											| Taking a tissue sample (biopsy) of the eyelid or eyebrow without surgical incision | not specified | 1-412.1 |  | 
																			
											| Taking a tissue sample (biopsy) of the nose without surgical incision | not specified | 1-414.0 |  | 
																			
											| Taking a tissue sample (biopsy) of the nose without surgical incision | not specified | 1-414.1 |  | 
																			
											| Taking a tissue sample (biopsy) of the mouth or oral cavity without surgical incision | not specified | 1-420.1 |  | 
																			
											| Taking a tissue sample (biopsy) of the mouth or oral cavity without surgical incision | not specified | 1-420.6 |  | 
																			
											| Taking a tissue sample (biopsy) of the larynx without surgical incision | not specified | 1-421.0 |  | 
																			
											| Taking a tissue sample (biopsy) of the larynx without surgical incision | not specified | 1-421.1 |  | 
																			
											| Taking a tissue sample (biopsy) of the throat (pharynx) without surgical incision | not specified | 1-422.01 |  | 
																			
											| Taking a tissue sample (biopsy) of the upper digestive tract, biliary tract or the pancreas by endoscopy | not specified | 1-440.a |  | 
																			
											| Taking a tissue sample (biopsy) of muscle or soft tissue through a surgical incision | not specified | 1-502.0 |  | 
																			
											| Taking a tissue sample (biopsy) of the nasal pharynx through a surgical incision | not specified | 1-548 |  | 
																			
											| Taking a tissue sample (biopsy) of the larynx through a surgical incision | not specified | 1-549.0 |  | 
																			
											| Taking a tissue sample (biopsy) of the larynx through a surgical incision | not specified | 1-549.1 |  | 
																			
											| Taking a tissue sample (biopsy) of the larynx through a surgical incision | not specified | 1-549.x |  | 
																			
											| Examination of the larynx by endoscopy | not specified | 1-610.1 |  | 
																			
											| Examination of the nose by endoscopy | not specified | 1-612 |  | 
																			
											| Examination of the trachea and the bronchi by endoscopy | not specified | 1-620.00 |  | 
																			
											| Examination of the oesophagus by endoscopy | not specified | 1-630.0 |  | 
																			
											| Examination of the oesophagus and the stomach by endoscopy | not specified | 1-631.0 |  | 
																			
											| Special staining of the lining (mucosa) of the oesophagus and stomach during endoscopy | not specified | 1-63b |  | 
																			
											| Examination of the trachea or bronchi by endoscopy, through a surgical incision, or during an operation | not specified | 1-690.0 |  | 
																			
											| Computed tomography (CT) of the head without contrast medium | not specified | 3-200 |  | 
																			
											| Computed tomography (CT) of the chest without contrast medium | not specified | 3-202 |  | 
																			
											| X-rays of the arteries of the neck with contrast medium | not specified | 3-601 |  | 
																			
											| X-rays of the arteries in the pelvis with contrast medium | not specified | 3-605 |  | 
																			
											| X-rays of small arteries with contrast medium | not specified | 3-608 |  | 
																			
											| Magnetic resonance imaging (MRI) of the neck with contrast medium | not specified | 3-821 |  | 
																			
											| Reconstructive operations on the meninges | not specified | 5-021.1 |  | 
																			
											| Other reconstructive operations on a nerve or nerve plexus | not specified | 5-058.1 |  | 
																			
											| Other reconstructive operations on a nerve or nerve plexus | not specified | 5-058.x |  | 
																			
											| Surgical removal of the thyroid gland | not specified | 5-063.0 |  | 
																			
											| Surgical removal of a residual connection between the thyroid gland and tongue after birth | not specified | 5-065.0 |  | 
																			
											| Surgical removal of a residual connection between the thyroid gland and tongue after birth | not specified | 5-065.1 |  | 
																			
											| Surgical removal or destruction of (diseased) tissue in the eyelid | not specified | 5-091.10 |  | 
																			
											| Surgical incision into the outer ear | not specified | 5-180.3 |  | 
																			
											| Surgical removal or destruction of diseased tissue in the outer ear | not specified | 5-181.7 |  | 
																			
											| Surgical removal or destruction of diseased tissue in the outer ear | not specified | 5-181.9 |  | 
																			
											| Partial or complete surgical removal of the pinna | not specified | 5-182.2 |  | 
																			
											| Surgical construction or reconstructive operation on the external auditory canal | not specified | 5-185.0 |  | 
																			
											| Surgical construction or reconstructive operation on the external auditory canal | not specified | 5-185.2 |  | 
																			
											| Reconstructive operations of parts of the pinna | not specified | 5-186.x |  | 
																			
											| Surgical closure of the eardrum (tympanic membrane) (type I) | not specified | 5-194.0 |  | 
																			
											| Surgical closure of the eardrum (tympanic membrane) or reconstructive operations on the ossicles (small bones) of the ear | not specified | 5-195.90 |  | 
																			
											| Surgical closure of the eardrum (tympanic membrane) or reconstructive operations on the ossicles (small bones) of the ear | not specified | 5-195.92 |  | 
																			
											| Surgical closure of the eardrum (tympanic membrane) or reconstructive operations on the ossicles (small bones) of the ear | not specified | 5-195.b0 |  | 
																			
											| Surgical closure of the eardrum (tympanic membrane) or reconstructive operations on the ossicles (small bones) of the ear | not specified | 5-195.bx |  | 
																			
											| Surgical closure of the eardrum (tympanic membrane) or reconstructive operations on the ossicles (small bones) of the ear | not specified | 5-195.c3 |  | 
																			
											| Surgical implantation of a stirrup (stapedial) prosthesis | not specified | 5-197.2 |  | 
																			
											| Other microscopic surgery on the middle ear using equipment for optical magnification | not specified | 5-199 |  | 
																			
											| Reconstructive operations on the middle ear | not specified | 5-204.0 |  | 
																			
											| Reconstructive operations on the middle ear | not specified | 5-204.3 |  | 
																			
											| Other surgical removal from the middle or inner ear | not specified | 5-205.0 |  | 
																			
											| Other surgical removal from the middle or inner ear | not specified | 5-205.3 |  | 
																			
											| Other surgical removal from the middle or inner ear | not specified | 5-205.4 |  | 
																			
											| Surgical removal or targeted destruction of the inner ear | not specified | 5-208.0 |  | 
																			
											| Other operations on the middle or inner ear | not specified | 5-209.4 |  | 
																			
											| Other operations on the middle or inner ear | not specified | 5-209.6 |  | 
																			
											| Other operations on the middle or inner ear | not specified | 5-209.b |  | 
																			
											| Other operations on the middle or inner ear | not specified | 5-209.c |  | 
																			
											| Surgical removal or destruction of diseased tissue in the nose | not specified | 5-212.0 |  | 
																			
											| Surgical removal or destruction of diseased tissue in the nose | not specified | 5-212.2 |  | 
																			
											| Surgical removal or destruction of diseased tissue in the nose | not specified | 5-212.4 |  | 
																			
											| Surgical removal or reconstruction of the nasal septum | not specified | 5-214.0 |  | 
																			
											| Surgical removal or reconstruction of the nasal septum | not specified | 5-214.72 |  | 
																			
											| Surgical removal or reconstruction of the nasal septum | not specified | 5-214.7x |  | 
																			
											| Operation on the inferior nasal concha | not specified | 5-215.02 |  | 
																			
											| Surgical reduction of a broken nose | not specified | 5-216.0 |  | 
																			
											| Surgical reduction of a broken nose | not specified | 5-216.1 |  | 
																			
											| Corrective surgery on the external nose | not specified | 5-217.0 |  | 
																			
											| Corrective surgery on the external nose | not specified | 5-217.2 |  | 
																			
											| Corrective surgery on the external nose | not specified | 5-217.3 |  | 
																			
											| Corrective surgery on the internal or external nose | not specified | 5-218.00 |  | 
																			
											| Corrective surgery on the internal or external nose | not specified | 5-218.20 |  | 
																			
											| Other operations on the nose | not specified | 5-219.2 |  | 
																			
											| Other operations on the nose | not specified | 5-219.x |  | 
																			
											| Operation on the maxillary sinuses | not specified | 5-221.0 |  | 
																			
											| Operation on the maxillary sinuses | not specified | 5-221.4 |  | 
																			
											| Operation on the ethmoid bone or on the sphenoid sinus | not specified | 5-222.0 |  | 
																			
											| Operation on the frontal sinuses | not specified | 5-223.5 |  | 
																			
											| Operation on several paranasal sinuses | not specified | 5-224.3 |  | 
																			
											| Operation on several paranasal sinuses | not specified | 5-224.4 |  | 
																			
											| Operation on several paranasal sinuses | not specified | 5-224.6x |  | 
																			
											| Other operations on the paranasal sinuses | not specified | 5-229 |  | 
																			
											| Surgical incision, removal or destruction of diseased tissue in the tongue | not specified | 5-250.2 |  | 
																			
											| Surgical removal of part of the tongue | not specified | 5-251.0x |  | 
																			
											| Surgical removal of part of the tongue | not specified | 5-251.2x |  | 
																			
											| Surgical removal of diseased tissue from a salivary gland or a salivary duct | not specified | 5-261.3 |  | 
																			
											| Surgical removal of a salivary gland | not specified | 5-262.04 |  | 
																			
											| Surgical removal of a salivary gland | not specified | 5-262.12 |  | 
																			
											| Surgical removal of a salivary gland | not specified | 5-262.13 |  | 
																			
											| Surgical removal of a salivary gland | not specified | 5-262.14 |  | 
																			
											| Surgical removal of a salivary gland | not specified | 5-262.15 |  | 
																			
											| Surgical removal of a salivary gland | not specified | 5-262.41 |  | 
																			
											| Other operations on the salivary gland or salivary duct | not specified | 5-269.40 |  | 
																			
											| Surgical incision and drainage of fluid from the mouth, jaw or facial region | not specified | 5-270.4 |  | 
																			
											| Surgical incision, removal or destruction of diseased tissue in the oral cavity | not specified | 5-273.4 |  | 
																			
											| Surgical incision, removal or destruction of diseased tissue in the oral cavity | not specified | 5-273.6 |  | 
																			
											| Surgical incision, removal or destruction of diseased tissue in the oral cavity | not specified | 5-273.8 |  | 
																			
											| Corrective surgery on the floor of the mouth | not specified | 5-274.0 |  | 
																			
											| Surgical removal of the palatine tonsils (without removal of the adenoids) - tonsillectomy without adenoidectomy | not specified | 5-281.3 |  | 
																			
											| Surgical removal of the tonsils and adenoids | not specified | 5-282.x |  | 
																			
											| Other operations on the tonsils or adenoids | not specified | 5-289.00 |  | 
																			
											| Other operations on the tonsils or adenoids | not specified | 5-289.02 |  | 
																			
											| Other operations on the tonsils or adenoids | not specified | 5-289.4 |  | 
																			
											| Surgical opening of the throat (pharynx) | not specified | 5-290.3 |  | 
																			
											| Surgical removal or destruction of diseased tissue in the throat (pharynx) | not specified | 5-292.0 |  | 
																			
											| Surgical removal or destruction of diseased tissue in the throat (pharynx) | not specified | 5-292.3x |  | 
																			
											| Surgical replacement of the lining of the throat (pharyngeal mucosa) | not specified | 5-293.0 |  | 
																			
											| Surgical replacement of the lining of the throat (pharyngeal mucosa) | not specified | 5-293.1 |  | 
																			
											| Other reconstructive operations on the throat (pharynx) | not specified | 5-294.4 |  | 
																			
											| Surgical removal of parts of the pharynx | not specified | 5-295.01 |  | 
																			
											| Surgical removal of parts of the pharynx | not specified | 5-295.11 |  | 
																			
											| Surgical removal of one side of the larynx | not specified | 5-301.0 |  | 
																			
											| Surgical removal of one side of the larynx | not specified | 5-301.3 |  | 
																			
											| Other partial removal of the larynx | not specified | 5-302.4 |  | 
																			
											| Surgical removal of the larynx | not specified | 5-303.11 |  | 
																			
											| Insertion of a permanent, artificial tracheal opening | not specified | 5-312.1 |  | 
																			
											| Surgical incision into the larynx or other incisions into the trachea | not specified | 5-313.1 |  | 
																			
											| Reconstructive operations on the trachea | not specified | 5-316.2 |  | 
																			
											| Other operations on the larynx or trachea | not specified | 5-319.9 |  | 
																			
											| Other surgical closure of blood vessels | not specified | 5-389.03 |  | 
																			
											| Other surgical closure of blood vessels | not specified | 5-389.91 |  | 
																			
											| Surgical incision into lymph nodes or lymphatic vessels | not specified | 5-400 |  | 
																			
											| Complete, surgical removal of all the lymph nodes in the neck - neck dissection | not specified | 5-403.00 |  | 
																			
											| Complete, surgical removal of all the lymph nodes in the neck - neck dissection | not specified | 5-403.01 |  | 
																			
											| Complete, surgical removal of all the lymph nodes in the neck - neck dissection | not specified | 5-403.11 |  | 
																			
											| Other operations on the oesophagus | not specified | 5-429.0 |  | 
																			
											| Surgical insertion of a tube into the stomach through the abdominal wall for artificial feeding | not specified | 5-431.20 |  | 
																			
											| Surgical insertion of a tube into the stomach through the abdominal wall for artificial feeding | not specified | 5-431.21 |  | 
																			
											| Surgical reduction of a fracture of the side of the midface, especially of the cheekbone (zygomatic bone) or the lateral wall of the eye socket (orbit) | not specified | 5-760.0 |  | 
																			
											| Surgical reduction of a fracture of the side of the midface, especially of the cheekbone (zygomatic bone) or the lateral wall of the eye socket (orbit) | not specified | 5-760.13 |  | 
																			
											| Surgical reduction of a fracture of the side of the midface, especially of the cheekbone (zygomatic bone) or the lateral wall of the eye socket (orbit) | not specified | 5-760.43 |  | 
																			
											| Surgical reduction of a fracture of the eye socket (orbit) | not specified | 5-766.3 |  | 
																			
											| Surgical reduction of a fracture of the eye socket (orbit) | not specified | 5-766.x |  | 
																			
											| Surgical incision into the muscles, tendons or their connective tissue sheaths | not specified | 5-850.c0 |  | 
																			
											| 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 | 5-892.14 |  | 
																			
											| Other surgical incision into the skin or subcutaneous tissues | not specified | 5-892.xc |  | 
																			
											| Surgical removal of diseased tissue from the skin or subcutaneous tissues | not specified | 5-894.04 |  | 
																			
											|  | not specified | 5-896.05 |  | 
																			
											| Skin grafting together with the associated blood vessels and nerves [site of removal and nature of the graft] | not specified | 5-904.26 |  | 
																			
											| Skin grafting together with the associated blood vessels and nerves [site of removal and nature of the graft] | not specified | 5-905.14 |  | 
																			
											| Combined reconstructive operations on the skin or subcutaneous tissues | not specified | 5-906.14 |  | 
																			
											| Temporary covering of soft tissue injuries with skin or artificial skin | not specified | 5-916.a2 |  | 
																			
											| Removal of a foreign body by endoscopy | not specified | 8-100.2 |  | 
																			
											| Removal of a foreign body by endoscopy | not specified | 8-100.30 |  | 
																			
											| Removal of a foreign body by endoscopy | not specified | 8-100.50 |  | 
																			
											| Removal of a foreign body without a surgical incision | not specified | 8-101.3 |  | 
																			
											| Exchange or removal of a feeding tube inserted into the stomach through the skin | not specified | 8-123.0 |  | 
																			
											| Specific dressing techniques | not specified | 8-190.20 |  | 
																			
											| Treatment by specific positioning of the patient in bed, e.g. positioning in a sling table or special bed | not specified | 8-390.x |  | 
																			
											| Exchange or removal of the absorbent pack used to stop bleeding (tamponade) | not specified | 8-506 |  | 
																			
											| Treatment of cardiac arrhythmias with electric shocks - defibrillation | not specified | 8-640.0 |  | 
																			
											| Insertion of a tube into the trachea for ventilation - intubation | not specified | 8-701 |  | 
																			
											| Use of a face, nasal, or laryngeal mask for mechanical ventilation | not specified | 8-706 |  | 
																			
											|  | not specified | 8-713.0 |  | 
																			
											|  | not specified | 8-718.71 |  | 
																			
											|  | not specified | 8-718.73 |  | 
																			
											|  | not specified | 8-831.00 |  | 
																			
											| Treatment of a vessel with access via a tube (catheter) | not specified | 8-836.m1 |  | 
																			
											| Treatment of a vessel with access via a tube (catheter) | not specified | 8-836.nc |  | 
																			
											| Additional information on materials used | not specified | 8-83b.36 |  | 
																			
											| Additional information on materials used | not specified | 8-83b.70 |  | 
																			
											| Procedure for dialysing the blood outside the body with removal of the poison over a concentration gradient - dialysis | not specified | 8-854.3 |  | 
																			
											|  | not specified | 8-98f.10 |  | 
																			
											|  | not specified | 8-98f.21 |  | 
																			
											|  | not specified | 8-98g.10 |  | 
																			
											| Treatment of physically or functionally induced disorders of speech, language, the voice or swallowing | not specified | 9-320 |  | 
																			
											| Treatment procedure to maintain and encourage practical everyday and social skills - psychosocial intervention | not specified | 9-401.30 |  | 
																			
											| Treatment procedure to maintain and encourage practical everyday and social skills - psychosocial intervention | not specified | 9-401.31 |  | 
																			
											|  | not specified | 9-984.6 |  | 
																			
											|  | not specified | 9-984.7 |  | 
																			
											|  | not specified | 9-984.8 |  |