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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*3Comments to Author 
Author affiliations: *Walter Reed Army Institute of Research, Silver Spring, Maryland, USA; †Air Force Institute for Operational Health, Brooks City Base, Texas, USA;

Main Article

Table 1

Original set of 29 ICD-9 codes included in the influenzalike illness syndrome in ESSENCE*

ICD-9 codeDescriptionSpecificity and severity rank†
079.89
Viral infection NEC*
4
079.99
Viral infection NOS*
4
460
Nasopharyngitis, acute
4
462
Pharyngitis, acute
4
464.00
Laryngitis, acute, without obstruction
4
464.10
Tracheitis, acute, without obstruction
4
464.20
Laryngotracheitis, acute without obstruction
4
465.0
Laryngopharyngitis, acute
4
465.8
Infectious upper respiratory, multiple sites, acute NEC
4
465.9
Infectious upper respiratory, multiple sites, acute NOS
4
466.0
Bronchitis, acute
3
466.11
Bronchiolitis due to respiratory syncytial virus
3
466.19
Bronchiolitis, acute, due to other infectious organism
3
478.9
Disease, upper respiratory NEC/NOS
4
480.0
Pneumonia due to adenovirus
2
480.1
Pneumonia due to respiratory syncytial virus
2
480.2
Pneumonia due to parainfluenza
2
480.8
Pneumonia due to virus NEC
2
480.9
Viral pneumonia unspecified
2
484.8
Pneumonia in other infectious disease NEC
2
485
Bronchopneumonia, organism NOS
2
486
Pneumonia, organism NOS
2
487.0
Influenza with pneumonia
1
487.1
Influenza with respiratory manifestation NEC
1
487.8
Influenza with manifestation NEC
1
490
Bronchitis NOS
3
780.6
Fever
4
784.1
Pain, throat
4
786.2Cough4

*ICD-9, International Classification of Diseases, Ninth Revision; ESSENCE, Electronic Surveillance System for the Early Notification of Community-based Epidemics; NOS, not otherwise specified; NEC, not elsewhere classified.
†Specificity and severity rank: 1, most severe or specific; 4, least severe or specific.

Main Article

1Current affiliation: Tacoma–Pierce County Health Department, Tacoma, Washington, USA

2Current affiliation: US Census Bureau, Suitland, Maryland, USA

3Current affiliation: Uniformed Services University of the Health Sciences, Bethesda, Maryland, USA

Page created: June 29, 2010
Page updated: June 29, 2010
Page reviewed: June 29, 2010
The conclusions, findings, and opinions expressed by authors contributing to this journal do not necessarily reflect the official position of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.
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