Source Code Name Case count Share of cases (%)
INPAT INPAT_ICD10(K359) Acute appendicitis, unspecified 11403
OUTPAT OUTPAT_ICD10(K359) Acute appendicitis, unspecified 8867
INPAT INPAT_ICD9(5409X) Acute appendicitis without mention of peritonitis 4726
INPAT INPAT_ICD8(54099) Acute appendicitis, Without mention of peritonitis 4397
INPAT INPAT_ICD8(54091) Acute appendicitis, Gangraenosa, peritonitide non indicata 1555
INPAT INPAT_ICD10(K350) Acute appendicitis with generalized peritonitis 1441
INPAT INPAT_ICD8(54090) Acute appendicitis, Phlegmonosa, peritonitide non indicata 1150
INPAT INPAT_ICD10(K351) Acute appendicitis with peritoneal abscess 1118
INPAT INPAT_ICD8(54199) Appendicitis, unqualified 981
OUTPAT OUTPAT_ICD10(K351) Acute appendicitis with peritoneal abscess 657
OUTPAT OUTPAT_ICD10(K350) Acute appendicitis with generalized peritonitis 576
INPAT INPAT_ICD8(54000) Acute appendicitis, Perforans 521
PRIM_OUT PRIM_OUT_NOT_USED_ICD10(K359) Acute appendicitis, unspecified. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! 499
INPAT INPAT_ICD9(5410X) Appendicitis, unqualified 497
OUTPAT OUTPAT_ICD10(K37) Unspecified appendicitis 437
INPAT INPAT_ICD9(5400B) Acute appendicitis, With generalised peritonitis 398
INPAT INPAT_ICD9(5401A) Acute appendicitis with peritoneal abscess 361
INPAT INPAT_ICD8(54003) Acute appendicitis, Cum abscessu 341
INPAT INPAT_ICD8(54001) Acute appendicitis, Cum peritonitide diffusa 340
PRIM_OUT PRIM_OUT_NOT_USED_ICD10(K35) Acute appendicitis. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! 292
INPAT INPAT_ICD8(54002) Acute appendicitis, Cum peritonitide circumscripta 271
INPAT INPAT_ICD9(5400A) Acute appendicitis, With generalised peritonitis 253
PRIM_OUT PRIM_OUT_NOT_USED_ICD10(K37) Unspecified appendicitis. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! 202
INPAT INPAT_ICD10(K37) Unspecified appendicitis 191
INPAT INPAT_ICD8(54200) Other appendicitis, Appendicitis chronica 184
INPAT INPAT_ICD10(K36) Other appendicitis 140
OUTPAT OUTPAT_ICD10(K36) Other appendicitis 128
INPAT INPAT_ICD9(5428X) Other appendicitis 83
INPAT INPAT_ICD8(54208) Other appendicitis 82
INPAT INPAT_ICD8(54301) Other diseases of appendix, Stercolithium appendicis 56
INPAT INPAT_ICD8(54309) Other diseases of appendix, Unspecified 38
INPAT INPAT_ICD9(5420A) Other appendicitis 37
OUTPAT OUTPAT_ICD10(K35) Acute appendicitis 37
PRIM_OUT PRIM_OUT_NOT_USED_ICD10(K350) Acute appendicitis with generalized peritonitis. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! 35
INPAT INPAT_ICD10(K389) Disease of appendix, unspecified 34
INPAT INPAT_ICD8(54308) Other diseases of appendix, Alii definiti 34
OUTPAT OUTPAT_ICD10(K389) Disease of appendix, unspecified 33
OUTPAT OUTPAT_ICD10(K388) Other specified diseases of appendix 32
INPAT INPAT_ICD9(5439X) Other and unspecified diseases of appendix 30
PRIM_OUT PRIM_OUT_NOT_USED_ICD10(K351) Acute appendicitis with peritoneal abscess. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! 30
INPAT INPAT_ICD10(K388) Other specified diseases of appendix 24
INPAT INPAT_ICD8(54009) Name not found 23
PRIM_OUT PRIM_OUT_NOT_USED_ICD10(K36) Other appendicitis. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! 20
INPAT INPAT_ICD8(54201) Other appendicitis, Appendicitis recidivans 16
INPAT INPAT_ICD10(K381) Appendicular concretions 14
INPAT INPAT_ICD8(54300) Other diseases of appendix, Mucocele appendicis 14
INPAT INPAT_ICD9(5409A) Name not found 9
INPAT INPAT_ICD9(5421A) Other appendicitis 9
INPAT INPAT_ICD8(54191) Name not found 8
OUTPAT OUTPAT_ICD10(K381) Appendicular concretions 8
DEATH DEATH_ICD10(K350) Acute appendicitis with generalized peritonitis 6
INPAT INPAT_ICD10(K35) Acute appendicitis 6
INPAT INPAT_ICD10(K380) Hyperplasia of appendix 6
INPAT INPAT_ICD8(54100) Name not found 6
INPAT INPAT_ICD8(54190) Name not found 6
OUTPAT OUTPAT_ICD10(K380) Hyperplasia of appendix 6
PRIM_OUT PRIM_OUT_NOT_USED_ICD10(K389) Disease of appendix, unspecified. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! 6
INPAT INPAT_ICD8(54399) Name not found 5
INPAT INPAT_ICD9(5410A) Name not found 5