A retrospective case-control cohort analysis of comorbidity and health expenditure in hospitalized adults diagnosed with obesity utilizing ICD-10 diagnostic coding

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Bishay, Ramy H
Meyerowitz-Katz, G
Hng, TM
Colaco, CMG
Khanna, S
Klein, R
Sanjeev, D
McLean, M
Ahlenstiel, G
Maberly, GF
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2021
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Abstract

The cost and comorbidity of obesity in hospitalized inpatients, is less known. A retrospective study of patients presenting to a large district hospital in Western Sydney (April 2016-February 2017) using clinical, pathological as well as diagnostic coding data for obesity as per ICD-10. Of 43 212 consecutive hospital presentations, 390 had an obesity-coded diagnosis (Ob, 0.90%), of which 244 were gender and age-matched to a non-obesity coded cohort (NOb). Weight and BMI were higher in the Ob vs NOb group (126 ± 37 vs 82 ± 25 kg; BMI 46 ± 12 vs 29 ± 8 kg/m2 , P < .001) with a medical record documentation rate of 62% for obesity among Ob. The Ob cohort had 2-5× higher rates of cardiopulmonary and metabolic complications (P < .001), greater pharmacologic burden, length of stay (LOS, 225 vs 89 hours, P < .001) and stay in intensive care but no differences in the prevalence of mental disorders. Compared with BMI <35 kg/m2 , inpatients with BMI >35 kg/m2 were 5× more likely to require intensive care (OR 5.08 [1.43-27.3, 95% CI], P = .0047). The initiation of obesity-specific interventions by clinical teams was very low. People with obesity who are admitted to hospital carry significant cost and complications, yet obesity is seldom recognized as a clinical entity or contributor.

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Clinical Obesity

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11

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5

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Clinical sciences

health expenditure

length of stay

metabolic associated fatty liver disease

obesity

obesity complications

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Bishay, RH; Meyerowitz-Katz, G; Hng, TM; Colaco, CMG; Khanna, S; Klein, R; Sanjeev, D; McLean, M; Ahlenstiel, G; Maberly, GF, A retrospective case-control cohort analysis of comorbidity and health expenditure in hospitalized adults diagnosed with obesity utilizing ICD-10 diagnostic coding, Clinical Obesity, 2021, 11 (5), pp. e12469

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