Volume 13, Number 2—February 2007
Research
Code-based Syndromic Surveillance for Influenzalike Illness by International Classification of Diseases, Ninth Revision
Nicola Marsden-Haug*1, Virginia B. Foster*, Philip L. Gould†, Eugene Elbert*2, Hailiang Wang*, and Julie A. Pavlin*3
Table 4
Laboratory specimens matched with outpatient visit data, Air Force data, June 2001–June 2003*†
| ICD-9 code | Description | No. | % Positive for any viral respiratory pathogen | % Positive for influenza A or B |
|---|---|---|---|---|
| 079.99 | Viral infection NOS* | 783 | 51 | 40 |
| 780.6 | Fever | 611 | 74 | 13 |
| 466.0 | Bronchitis, acute | 146 | 39 | 15 |
| 486 | Pneumonia, organism NOS | 238 | 40 | 12 |
| 465.9 | Infectious upper respiratory, multiple sites, acute NOS | 1,251 | 61 | 20 |
| 461.9 | Acute sinusitis, unspecified | 66 | 47 | 28 |
| 382.9 | Otitis media NOS | 51 | 31 | 27 |
| 460 | Nasopharyngitis, acute | 286 | 36 | 23 |
| 490 | Bronchitis NOS | 26 | 39 | 26 |
| 786.2 | Cough | 52 | 37 | 23 |
| 487.1 | Influenza with respiratory manifestation NEC | 372 | 54 | 49 |
| 487.8 | Influenza with manifestation NEC | 46 | 46 | 43 |
| 487.0 | Influenza with pneumonia | 4 | 100 | 75 |
| 465.8 | Infectious upper respiratory, multiple sites, acute NEC | 38 | 68 | 28 |
| 466.11 | Bronchiolitis due to respiratory syncytial virus | 33 | 61 | 9 |
| 466.19 | Bronchiolitis, acute, due to other infectious organism | 88 | 30 | 3 |
| 480.2 | Pneumonia due to parainfluenza | 0 | NA | NA |
| 462 | Pharyngitis, acute | 637 | 40 | 13 |
| 480.1 | Pneumonia due to respiratory syncytial virus | 2 | 0 | 0 |
| 382.00 | Otitis media, acute suppurative NOS | 30 | 47 | 30 |
| 480.9 | Viral pneumonia unspecified | 5 | 40 | 40 |
| 478.9 | Disease, upper respiratory NEC/NOS | 1 | 100 | 0 |
| 461.8 | Other acute sinusitis | 0 | NA | NA |
| 465.0 | Laryngopharyngitis, acute | 3 | 67 | 0 |
| 484.8 | Pneumonia in other infectious disease NEC | 1 | 0 | 0 |
| 480.8 | Pneumonia due to virus NEC | 6 | 50 | 16 |
| 079.89 | Viral infection, NEC | 33 | 36 | 33 |
| 485 | Bronchopneumonia, organism NOS | 0 | NA | NA |
| 464.20 | Laryngotracheitis, acute without obstruction | 0 | NA | NA |
| 463 | Acute tonsillitis | 57 | 46 | 0 |
| 784.1 | Pain, throat | 14 | 14 | 0 |
| 464.10 | Tracheitis, acute, without obstruction | 1 | 0 | 0 |
| 480.0 | Pneumonia due to adenovirus | 0 | NA | NA |
| 464.00 | Laryngitis, acute, without obstruction | 2 | 0 | 0 |
*International Classification of Diseases, Ninth Revision (ICD-9); NOS, not otherwise specified; NEC, not elsewhere classified (as listed in the ICD-9); NA, not .assessed.
†Laboratory specimen data matched with outpatient visit data in Air Force analysis, June 2001–June 2003.
