Volume 12, Number 10—October 2006
Letter
ICD-9 Codes for Identifying Influenza Hospitalizations in Children
Ron Keren*
, Anna Wheeler*, Susan E. Coffin*, Theoklis Zaoutis*, Richard Hodinka*, and Kateri Heydon*
, Anna Wheeler*, Susan E. Coffin*, Theoklis Zaoutis*, Richard Hodinka*, and Kateri Heydon*
Table
Influenza-specific admission or discharge ICD-9 codes (487.0, 487.1, and 487.8.) compared with influenza laboratory test results*
| Parameter | LCI | No LCI | Total |
|---|---|---|---|
| Influenza-specific diagnosis codes | 463 | 66 | 529 |
| No influenza-specific diagnosis codes | 252 | – | – |
| Total | 715 | – | –
*ICD-9, International Classification of Diseases-9; LCI, laboratory-confirmed influenza. The sensitivity and positive predictive value of influenza-specific diagnosis codes were 65% and 88%, respectively. |
*ICD-9, International Classification of Diseases-9; LCI, laboratory-confirmed influenza. The sensitivity and positive predictive value of influenza-specific diagnosis codes were 65% and 88%, respectively.
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