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Table 1 The ICD-9 codes used to describe ILI symptoms and their descriptions

From: Uncovering the relationships between military community health and affects expressed in social media

ICD9

Code Description for ILI Symptoms

79.99

Viral infection, NOS

382.9

Unspecified otitis media

460

Acute nasopharyngitis (common cold)

461.9

Acute sinusitis unspecified

465.8

Acute upper respiratory infections of other multiple sites

465.9

Acute upper respiratory infections of unspecified sites

466

Acute bronchitis

486

Pneumonia organism unspecified

487

Influenza with pneumonia

487.1

Influenza with other respiratory manifestations

487.8

Influenza with other manifestations

488

Influenza due to identified agent

490

Bronchitis, NOS

780.6

Fever

786.2

Cough

  1. NOS = Not otherwise specified.