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

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Number of subjects with at least one hospitalization and frequency of IBD diagnostic codes in hospital discharge abstracts among IBD and non-IBD patients are shown in Diagram 1. Diagram 1. Number of admissions and IBD diagnostic codes in IBD and non-IBD patients. IBD patients had a median number of two hospitalizations with a diagnostic code of IBD within the period of 1994-2004 (Mean, 2.5±3.1; range, 0-33). Within the same period IBD patients had a median number of 1 hospitalization with a most responsible diagnosis of IBD (Mean, 1.4±2.1; range, 0-20). 36
5.4.2 PC database (FY 1995 œ FY 2004) In total 2,386,552 claims were found for the cohort of patients from 1995 to 2004. Of 17,699 subjects, 570 did not have any physician claims. Of 2,386,552 claims, 310,990 claims did not have diagnostic codes and were removed from the analysis (i.e. radiology claims). In total, 28,586 claims were identified with an ICD code of IBD (24,444 claims in IBD patients, 2,575 in possible IBD cases, and 1,567 claims in non-IBD patients) (Diagram 2 and Diagram 3). Diagram 2. Frequency of physician claims and IBD diagnostic codes among IBD patients. 37
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: 5.4.1 IP database (FY 1994 œ FY 20
Page 51 and 52: Diagram 4. Frequency of ACCS contac
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:
Page 120 and 121:
IBD patients had a median number of
Page 122 and 123:
Diagram 8. Frequency of ACCS contac
Page 124 and 125:
IP = 1 PC =3 ACCS =2 IP = 1 PC = 3
Page 126 and 127:
IP = 1 PC = 5 ACCS = 2 IP = 1 PC =
Page 128 and 129:
IP = 2 PC = 2 ACCS = 2 IP = 2 PC =
Page 130 and 131:
IP = 2 PC = 4 ACCS = 2 IP = 2 PC =
Page 132 and 133:
IP = 2 PC = 6 ACCS = 2 IP = 2 PC =
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IP = 1 PC =4 IP = 1 PC = 5 Criteria
Page 136 and 137:
IP = 2 PC = 3 IP = 2 PC = 4 Criteri
Page 138 and 139:
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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