Source Code Name Case count Share of cases (%)
INPAT INPAT_ICD10(K359) Acute appendicitis, unspecified 17153
OUTPAT OUTPAT_ICD10(K359) Acute appendicitis, unspecified 13892
INPAT INPAT_ICD9(5409X) Acute appendicitis without mention of peritonitis 6196
INPAT INPAT_ICD8(54099) Acute appendicitis, Without mention of peritonitis 5704
INPAT INPAT_ICD8(54091) Acute appendicitis, Gangraenosa, peritonitide non indicata 2029
INPAT INPAT_ICD10(K350) Acute appendicitis with generalized peritonitis 2025
INPAT INPAT_ICD10(K351) Acute appendicitis with peritoneal abscess 1701
INPAT INPAT_ICD8(54090) Acute appendicitis, Phlegmonosa, peritonitide non indicata 1473
INPAT INPAT_ICD8(54199) Appendicitis, unqualified 1286
OUTPAT OUTPAT_ICD10(K351) Acute appendicitis with peritoneal abscess 1075
PRIM_OUT PRIM_OUT_NOT_USED_ICD10(K359) Acute appendicitis, unspecified. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! 983
OUTPAT OUTPAT_ICD10(K37) Unspecified appendicitis 851
OUTPAT OUTPAT_ICD10(K350) Acute appendicitis with generalized peritonitis 830
INPAT INPAT_ICD8(54000) Acute appendicitis, Perforans 665
INPAT INPAT_ICD9(5410X) Appendicitis, unqualified 659
PRIM_OUT PRIM_OUT_NOT_USED_ICD10(K35) Acute appendicitis. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! 537
INPAT INPAT_ICD9(5400B) Acute appendicitis, With generalised peritonitis 515
INPAT INPAT_ICD8(54001) Acute appendicitis, Cum peritonitide diffusa 463
INPAT INPAT_ICD9(5401A) Acute appendicitis with peritoneal abscess 457
PRIM_OUT PRIM_OUT_NOT_USED_ICD10(K37) Unspecified appendicitis. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! 449
INPAT INPAT_ICD8(54003) Acute appendicitis, Cum abscessu 442
INPAT INPAT_ICD10(K37) Unspecified appendicitis 392
INPAT INPAT_ICD8(54002) Acute appendicitis, Cum peritonitide circumscripta 352
INPAT INPAT_ICD9(5400A) Acute appendicitis, With generalised peritonitis 330
INPAT INPAT_ICD8(65400) Labour and delivery with pelvic bone abnormality, With contracted pelvis, Occipital presentation 244
OUTPAT OUTPAT_ICD10(K36) Other appendicitis 224
INPAT INPAT_ICD8(54200) Other appendicitis, Appendicitis chronica 221
INPAT INPAT_ICD10(K36) Other appendicitis 197
INPAT INPAT_ICD9(6542B) Abnormality of organs and soft tissues of pelvis, Previous Caesarean delivery 168
INPAT INPAT_ICD9(3540A) Carpal tunnel syndrome 158
INPAT INPAT_ICD8(54208) Other appendicitis 108
INPAT INPAT_ICD9(5428X) Other appendicitis 103
PRIM_OUT PRIM_OUT_NOT_USED_ICD10(K351) Acute appendicitis with peritoneal abscess. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! 83
INPAT INPAT_ICD8(54301) Other diseases of appendix, Stercolithium appendicis 76
PRIM_OUT PRIM_OUT_NOT_USED_ICD10(K350) Acute appendicitis with generalized peritonitis. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! 65
INPAT INPAT_ICD9(6542A) Abnormality of organs and soft tissues of pelvis, Previous Caesarean delivery 64
OUTPAT OUTPAT_ICD10(K389) Disease of appendix, unspecified 59
INPAT INPAT_ICD8(54309) Other diseases of appendix, Unspecified 55
OUTPAT OUTPAT_ICD10(K35) Acute appendicitis 51
PRIM_OUT PRIM_OUT_NOT_USED_ICD10(K36) Other appendicitis. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! 50
INPAT INPAT_ICD10(K389) Disease of appendix, unspecified 49
INPAT INPAT_ICD9(5420A) Other appendicitis 47
INPAT INPAT_ICD10(K388) Other specified diseases of appendix 45
OUTPAT OUTPAT_ICD10(K388) Other specified diseases of appendix 44
INPAT INPAT_ICD9(5439X) Other and unspecified diseases of appendix 43
INPAT INPAT_ICD8(54308) Other diseases of appendix, Alii definiti 42
INPAT INPAT_ICD8(74540) Congenital anomalies of ear, face and neck, Branchial cleft, cyst or fistula; preauricular sinus 36
INPAT INPAT_ICD8(54009) Name not found 29
INPAT INPAT_ICD9(3542A) Lesion of ulnar nerve 26
INPAT INPAT_ICD8(05402) Herpes simplex, Genitalis 25
INPAT INPAT_ICD10(K381) Appendicular concretions 20
INPAT INPAT_ICD8(05401) Herpes simplex, Gingivostomatitis 19
INPAT INPAT_ICD8(54201) Other appendicitis, Appendicitis recidivans 19
INPAT INPAT_ICD8(54300) Other diseases of appendix, Mucocele appendicis 18
DEATH DEATH_ICD10(K352) Name not found 17
INPAT INPAT_ICD9(4540A) Varicose veins of lower extremities with ulcer 16
INPAT INPAT_ICD8(65406) Labour and delivery with pelvic bone abnormality, With contracted pelvis, Complete or incomplete breech presentation 15
INPAT INPAT_ICD8(29540) Acute schizophrenia episode 14
INPAT INPAT_ICD8(45400) Varicose veins of lower extremities, With ulcer 14
INPAT INPAT_ICD10(K35) Acute appendicitis 13
INPAT INPAT_ICD8(05405) Herpes simplex, Kerato-conjunctivitis herpetica 12
INPAT INPAT_ICD8(75400) Clubfoot (congenital), Pes equino-varus adductus 12
OUTPAT OUTPAT_ICD10(K381) Appendicular concretions 12
PRIM_OUT PRIM_OUT_NOT_USED_ICD10(K389) Disease of appendix, unspecified. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! 12
INPAT INPAT_ICD9(5409A) Name not found 11
INPAT INPAT_ICD9(5421A) Other appendicitis 11
INPAT INPAT_ICD8(54191) Name not found 10
INPAT INPAT_ICD9(0541A) Herpes simplex, Genital herpes 10
INPAT INPAT_ICD9(0541B) Herpes simplex, Genital herpes 9
OUTPAT OUTPAT_ICD10(K380) Hyperplasia of appendix 9
INPAT INPAT_ICD10(K380) Hyperplasia of appendix 8
INPAT INPAT_ICD8(54100) Name not found 8
INPAT INPAT_ICD9(0542A) Herpes simplex, Herpetic gingivostomatitis 8
PRIM_OUT PRIM_OUT_NOT_USED_ICD10(K388) Other specified diseases of appendix. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! 8
INPAT INPAT_ICD8(54093) Name not found 7
INPAT INPAT_ICD8(54399) Name not found 7
INPAT INPAT_ICD9(3541A) Other lesion of median nerve 7
DEATH DEATH_ICD10(K350) Acute appendicitis with generalized peritonitis 6
INPAT INPAT_ICD8(54190) Name not found 6
INPAT INPAT_ICD8(78540) Symptoms referable to abdomen and lower gastro-intestinal tract, Meteorismus 6
INPAT INPAT_ICD9(6540A) Abnormality of organs and soft tissues of pelvis, Congenital abnormalities of uterus 6
INPAT INPAT_ICD8(05400) Herpes simplex, Labialis 5
INPAT INPAT_ICD8(05403) Herpes simplex, Cutaneus (Eczema herpeticum) 5
INPAT INPAT_ICD8(35401) Polyneuritis and polyradiculitis, Polyradicultitis Guillain-Barré 5
INPAT INPAT_ICD8(35409) Polyneuritis and polyradiculitis, Unspecified 5
INPAT INPAT_ICD8(54010) Name not found 5
INPAT INPAT_ICD8(54080) Name not found 5
INPAT INPAT_ICD8(65404) Labour and delivery with pelvic bone abnormality, With contracted pelvis, Occipital presentation, posterior position 5
INPAT INPAT_ICD9(5410A) Name not found 5
INPAT INPAT_ICD9(5430A) Hyperplasia of appendix (lymphoid) 5
INPAT INPAT_ICD9(6541A) Abnormality of organs and soft tissues of pelvis, Tumours of body of uterus 5
INPAT INPAT_ICD9(7542A) Congenital musculoskeletal deformities of spine 5
PRIM_OUT PRIM_OUT_NOT_USED_ICD10(K382) Diverticulum of appendix. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! 5