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. 2021 Feb 25;3(1):otab010.
doi: 10.1093/crocol/otab010. eCollection 2021 Jan.

Development and Validation of an Administrative Codes Algorithm to Identify Abdominal Surgery and Bowel Obstruction in Patients With Inflammatory Bowel Disease

Cassandra Gandle  1 , Frank I Scott  2 , Akbar Waljee  3   4 , Ravy K Vajravelu  5 , Shubhada Sansgiry  6   7   8 , Jason K Hou  7   8
Affiliations

Development and Validation of an Administrative Codes Algorithm to Identify Abdominal Surgery and Bowel Obstruction in Patients With Inflammatory Bowel Disease

Cassandra Gandle et al. Crohns Colitis 360. .

Abstract

Background: Validated administrative codes (CPT and ICD) can permit the use of large databases to study diseases and outcomes. The aim of this study was to validate administrative codes for surgery and obstructive complications in patients with inflammatory bowel disease (IBD).

Methods: We performed a retrospective study of IBD patients within the Veterans Affairs Health Administration (VA) from 2000 to 2015 with administrative codes for bowel surgery and complications validated by chart review. Positive predictive values (PPVs) and negative predictive value (NPV) were calculated.

Results: The PPV for bowel surgery was 96.4%; PPV of obstruction codes for bowel obstruction was 80.5% (95% confidence interval: 69.1%, 89.2%).

Conclusions: CPT and ICD codes for abdominal surgery and obstructive complications can be accurately utilized in IBD patients in VA.

Keywords: Crohn disease; inflammatory bowel disease; obstruction; surgery; ulcerative colitis.

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