Development of an ICD Coding Definition for Inflammatory Bowel ...

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Diagram 3. Frequency of physician claims and IBD diagnostic codes among non- IBD patients. IBD patients had a median number of 12 claims with a diagnostic code of IBD within the period of 1995-2004 (Mean, 19.4±23.4; range, 0-240). Within the same period, non-IBD patients had a median number of 0 claims (95 th percentile = 0) with a diagnostic code of IBD (mean, 0.1±1.5; range, 0-138). 5.4.3 ACCS database (FY 1996 œ FY 2004) In total 240,142 ACCS contacts were found for 17,112 (96.7%) patients. 7,246 contacts had a diagnostic code of IBD. Distribution of ACCS contacts is shown in Diagram 4. 38
Diagram 4. Frequency of ACCS contacts and IBD diagnostic codes among IBD and non-IBD patients. Although all of our patients had undergone colonoscopy, 3.3% of them did not have a contact in the ACCS database. This might be due to colonoscopies performed during the hospitalization periods, which are not recorded in ACCS database. IBD patients had a median number of two ACCS contacts with a diagnostic code of IBD within the period of 1996-2004 (Mean, 4.8±7.6; range, 0-87). Within the same period, non-IBD patients had a median number of 0 claims (99 th percentile = 0) with a diagnostic code of IBD (Mean, 0.005±0.1; range, 0-5). The top eleven procedures that held a diagnosis of IBD are shown in Table 2. 39
Page 1 and 2: UNIVERSITY OF CALGARY DEVELOPMENT O
Page 3 and 4: Abstract INTRODUCTION: To facilitat
Page 5 and 6: Dedication To my parents and my sis
Page 7 and 8: 4.3.1 Computerized search..........
Page 9 and 10: List of Tables Table1. Incidence an
Page 11 and 12: List of Abbreviations Symbol Defini
Page 13 and 14: Chapter One: INTRODUCTION Crohn‘s
Page 15 and 16: 2.1 Inflammatory Bowel disease Chap
Page 17 and 18: are usually apparent. Potentially l
Page 19 and 20: Incidence and prevalence rates of I
Page 21 and 22: contact in 1989 or later, to allow
Page 23 and 24: significant condition of the patien
Page 25 and 26: Young et al.[36] found that agreeme
Page 27 and 28: 3.1 Significance Chapter Three: Sig
Page 29 and 30: 4.1 Summarized design Chapter Four:
Page 31 and 32: 4.2.4 Ambulatory Care Classificatio
Page 33 and 34: 4.4 Retrieving the personal health
Page 35 and 36: 4.7 Preliminary development of the
Page 37 and 38: Each time frame 1 (i.e. ”t‘ in
Page 39 and 40: 4.7.1 Sensitivity Sensitivity (true
Page 41 and 42: hospitals were reviewed for each pa
Page 43 and 44: final two definitions was founded o
Page 45 and 46: Figure 1. Distribution of the proce
Page 47 and 48: 5.4.1 IP database (FY 1994 œ FY 20
Page 49: 5.4.2 PC database (FY 1995 œ FY 20
Page 53 and 54: Table 3. 2×2 contingency table and
Page 55 and 56: within 5 years“. Of 137 false pos
Page 57 and 58: —IP≥1 or PC≥5 or ACCS≥2 wit
Page 59 and 60: 5.6.2 False negative patients Defin
Page 61 and 62: definitions were selected as our fi
Page 63 and 64: • Incomplete documentation of lin
Page 65 and 66: 94.5% of our subjects were regarded
Page 67 and 68: prevalence of IBD in the Calgary He
Page 69 and 70: with no flare in the last 10 years
Page 71 and 72: • At least two independent and se
Page 73 and 74: FP rate (i.e. 1-specificity or ). T
Page 75 and 76: CD, IC patients who become CD or UC
Page 77 and 78: 6.5 Limitations When extrapolating
Page 79 and 80: egions that do not have access to t
Page 81 and 82: 17. Trallori, G., et al., A populat
Page 83 and 84: APPENDIX 1. INTERNATIONAL CLASSIFIC
Page 85 and 86: 556.8 Other ulcerative colitis 556.
Page 87 and 88: • ICD-10-CA Enteritis, NOS, diete
Page 89 and 90: APPENDIX 2. SEARCH TERMS IN ENDOPRO
Page 91 and 92: INVOLVEMENT Shade the corresponding
Page 93: APPENDIX 4. ETHICAL APPROVAL 81
Page 96 and 97: IP = 1 PC =3 ACCS =2 IP = 1 PC = 3
Page 98 and 99: IP = 1 PC = 5 ACCS = 2 IP = 1 PC =
Page 100 and 101:
IP = 2 PC = 2 ACCS = 2 IP = 2 PC =
Page 102 and 103:
IP = 2 PC = 4 ACCS = 2 IP = 2 PC =
Page 104 and 105:
IP = 2 PC = 6 ACCS = 2 IP = 2 PC =
Page 106 and 107:
IP = 1 PC =4 IP = 1 PC = 5 Criteria
Page 108 and 109:
IP = 2 PC = 3 IP = 2 PC = 4 Criteri
Page 110 and 111:
APPENDIX 7. 2×2 TABLES AND TEST CH
Page 112 and 113:
• Definition —IP≥1 or PC≥4
Page 114 and 115:
Page 116 and 117:
Page 118 and 119:
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IBD patients had a median number of
Page 122 and 123:
Diagram 8. Frequency of ACCS contac
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IP = 1 PC =3 ACCS =2 IP = 1 PC = 3
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IP = 1 PC = 5 ACCS = 2 IP = 1 PC =
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IP = 2 PC = 2 ACCS = 2 IP = 2 PC =
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IP = 2 PC = 4 ACCS = 2 IP = 2 PC =
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IP = 2 PC = 6 ACCS = 2 IP = 2 PC =
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IP = 1 PC =4 IP = 1 PC = 5 Criteria
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IP = 2 PC = 3 IP = 2 PC = 4 Criteri
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APPENDIX 11. 2×2 TABLES AND TEST C
Page 140 and 141:
Page 142 and 143:
Page 144 and 145:
Page 146:
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