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J Perinatol. 2005 Nov;25(11):737-42.

Validity of hospital discharge data for identifying infants with cardiac defects.

Author information

1
CDC/CSTE Applied Epidemiology Fellow, Minnesota Department of Health, St. Paul, MN 55164-0975, USA.

Abstract

OBJECTIVE:

To examine validity of the International Classification of Diseases, 9th Edition, Clinical Modification (ICD-9-CM) codes in discharge data for identifying infants with cardiac defects according to surveillance guidelines.

STUDY DESIGN:

Retrospective medical record review of infants born in 2001 at one hospital in Minneapolis, Minnesota. Infants were identified using ICD-9-CM codes from hospital discharge data, and keywords in medical records.

RESULTS:

Of 2,697 children, ICD-9-CM codes identified 66 infants coded with cardiac defects; physician review confirmed 24 had cardiac defects. Only 35 of 85 (41.2%) ICD-9-CM codes accurately reflected the cardiac defect diagnoses. Additional case finding located four infants with five cardiac defects. Sensitivity of ICD-9-CM codes for identifying these infants was 0.857, predictive value positive was 0.364.

CONCLUSIONS:

ICD-9-CM codes from hospital discharge data identified most infants with cardiac defects, but many were false positives. ICD-9-CM codes were inaccurate for specific cardiac defects.

PMID:
16163368
DOI:
10.1038/sj.jp.7211382
[Indexed for MEDLINE]

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