Validity of ICD-10 diagnoses of overweight and obesity in Danish hospitals
Sigrid Bjerge Gribsholt,1,2 Lars Pedersen,1 Bjørn Richelsen,3 Reimar Wernich Thomsen1 1Department of Clinical Epidemiology, Aarhus University Hospital, Aarhus, Denmark; 2Department of Endocrinology and Internal Medicine, Aarhus University Hospital, Aarhus, Denmark; 3The Steno Diabetes Cen...
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| Format: | Article |
| Language: | English |
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Dove Medical Press
2019-09-01
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| Series: | Clinical Epidemiology |
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| Online Access: | https://www.dovepress.com/validity-of-icd-10-diagnoses-of-overweight-and-obesity-in-danish-hospi-peer-reviewed-article-CLEP |
| _version_ | 1818540136025030656 |
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| author | Gribsholt SB Pedersen L Richelsen B Thomsen RW |
| author_facet | Gribsholt SB Pedersen L Richelsen B Thomsen RW |
| author_sort | Gribsholt SB |
| collection | DOAJ |
| description | Sigrid Bjerge Gribsholt,1,2 Lars Pedersen,1 Bjørn Richelsen,3 Reimar Wernich Thomsen1 1Department of Clinical Epidemiology, Aarhus University Hospital, Aarhus, Denmark; 2Department of Endocrinology and Internal Medicine, Aarhus University Hospital, Aarhus, Denmark; 3The Steno Diabetes Centre Aarhus, Aarhus University Hospital, Aarhus, DenmarkCorrespondence: Sigrid Bjerge GribsholtDepartment of Clinical Epidemiology, Aarhus University Hospital, Olof Palmes Allé 43-45, Aarhus N 8200, DenmarkTel +45 6 165 1148Email sigrgrib@rm.dkPurpose: Health care databases may be a valuable source for epidemiological research in obesity, if diagnoses are valid. We examined the validity and completeness of International Classification of Diseases, 10th revision [ICD-10] diagnosis coding for overweight/obesity in Danish hospitals.Patients and methods: We linked data from the Danish National Patient Registry on patients with a hospital diagnosis code of overweight/obesity (ICD-10 code E66) with computerized height and weight measurements made during hospital contacts in the Central Denmark Region Clinical Information System. We computed the positive predictive value (PPV) of the IDC-10 diagnosis of overweight/obesity, using a documented body mass index (BMI) ≥25 kg/m2 as gold standard. We also examined the completeness of obesity/overweight diagnosis coding among all patients recorded with BMI ≥25 kg/m2.Results: Of all 19,672 patients registered with a first diagnosis code of overweight/obesity in the National Patient Registry, 17,351 patients (88.2%) had any BMI measurement recorded in the Central Denmark Region Clinical Information System, and 17,240 patients (87.6%) had a BMI ≥25 kg/m2, yielding a PPV of 87.6% (95% CI: 87.2–88.1). The PPV was slightly higher for primary diagnosis codes of overweight/obesity: 94.1% (95% CI: 93.3–94.8) than for secondary diagnosis codes: 86.1% (95% CI: 85.6–86.6). The PPV increased with higher patient age: from 75.3% (95% CI: 73.8–76.9) in those aged 18–29 years to 94.7% (95% CI: 92.6–96.9) in patients aged 80 years and above. Completeness of obesity/overweight diagnosis coding among patients recorded with BMI ≥25 kg/m2 was only 10.9% (95% CI: 10.8–11.0).Conclusion: Our findings indicate a high validity of the ICD-10 code E66 for overweight/obesity when recorded; however, completeness of coding was low. Nonetheless, ICD-10 discharge codes may be a suitable source of data on overweight/obesity for epidemiological research.Keywords: obesity, validation, diagnosis code |
| first_indexed | 2024-12-11T21:51:19Z |
| format | Article |
| id | doaj.art-7735421b566a41acbd372f4b64301834 |
| institution | Directory Open Access Journal |
| issn | 1179-1349 |
| language | English |
| last_indexed | 2024-12-11T21:51:19Z |
| publishDate | 2019-09-01 |
| publisher | Dove Medical Press |
| record_format | Article |
| series | Clinical Epidemiology |
| spelling | doaj.art-7735421b566a41acbd372f4b643018342022-12-22T00:49:27ZengDove Medical PressClinical Epidemiology1179-13492019-09-01Volume 1184585448516Validity of ICD-10 diagnoses of overweight and obesity in Danish hospitalsGribsholt SBPedersen LRichelsen BThomsen RWSigrid Bjerge Gribsholt,1,2 Lars Pedersen,1 Bjørn Richelsen,3 Reimar Wernich Thomsen1 1Department of Clinical Epidemiology, Aarhus University Hospital, Aarhus, Denmark; 2Department of Endocrinology and Internal Medicine, Aarhus University Hospital, Aarhus, Denmark; 3The Steno Diabetes Centre Aarhus, Aarhus University Hospital, Aarhus, DenmarkCorrespondence: Sigrid Bjerge GribsholtDepartment of Clinical Epidemiology, Aarhus University Hospital, Olof Palmes Allé 43-45, Aarhus N 8200, DenmarkTel +45 6 165 1148Email sigrgrib@rm.dkPurpose: Health care databases may be a valuable source for epidemiological research in obesity, if diagnoses are valid. We examined the validity and completeness of International Classification of Diseases, 10th revision [ICD-10] diagnosis coding for overweight/obesity in Danish hospitals.Patients and methods: We linked data from the Danish National Patient Registry on patients with a hospital diagnosis code of overweight/obesity (ICD-10 code E66) with computerized height and weight measurements made during hospital contacts in the Central Denmark Region Clinical Information System. We computed the positive predictive value (PPV) of the IDC-10 diagnosis of overweight/obesity, using a documented body mass index (BMI) ≥25 kg/m2 as gold standard. We also examined the completeness of obesity/overweight diagnosis coding among all patients recorded with BMI ≥25 kg/m2.Results: Of all 19,672 patients registered with a first diagnosis code of overweight/obesity in the National Patient Registry, 17,351 patients (88.2%) had any BMI measurement recorded in the Central Denmark Region Clinical Information System, and 17,240 patients (87.6%) had a BMI ≥25 kg/m2, yielding a PPV of 87.6% (95% CI: 87.2–88.1). The PPV was slightly higher for primary diagnosis codes of overweight/obesity: 94.1% (95% CI: 93.3–94.8) than for secondary diagnosis codes: 86.1% (95% CI: 85.6–86.6). The PPV increased with higher patient age: from 75.3% (95% CI: 73.8–76.9) in those aged 18–29 years to 94.7% (95% CI: 92.6–96.9) in patients aged 80 years and above. Completeness of obesity/overweight diagnosis coding among patients recorded with BMI ≥25 kg/m2 was only 10.9% (95% CI: 10.8–11.0).Conclusion: Our findings indicate a high validity of the ICD-10 code E66 for overweight/obesity when recorded; however, completeness of coding was low. Nonetheless, ICD-10 discharge codes may be a suitable source of data on overweight/obesity for epidemiological research.Keywords: obesity, validation, diagnosis codehttps://www.dovepress.com/validity-of-icd-10-diagnoses-of-overweight-and-obesity-in-danish-hospi-peer-reviewed-article-CLEPobesityvalidationdiagnosis code |
| spellingShingle | Gribsholt SB Pedersen L Richelsen B Thomsen RW Validity of ICD-10 diagnoses of overweight and obesity in Danish hospitals Clinical Epidemiology obesity validation diagnosis code |
| title | Validity of ICD-10 diagnoses of overweight and obesity in Danish hospitals |
| title_full | Validity of ICD-10 diagnoses of overweight and obesity in Danish hospitals |
| title_fullStr | Validity of ICD-10 diagnoses of overweight and obesity in Danish hospitals |
| title_full_unstemmed | Validity of ICD-10 diagnoses of overweight and obesity in Danish hospitals |
| title_short | Validity of ICD-10 diagnoses of overweight and obesity in Danish hospitals |
| title_sort | validity of icd 10 diagnoses of overweight and obesity in danish hospitals |
| topic | obesity validation diagnosis code |
| url | https://www.dovepress.com/validity-of-icd-10-diagnoses-of-overweight-and-obesity-in-danish-hospi-peer-reviewed-article-CLEP |
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