ICD-10 Code | Description | During influenza seasons. Not restricted | During influenza seasons & excluding 2009 | 2009 pandemic season | |||
---|---|---|---|---|---|---|---|
 |  | Correlation | p | Correlation | p | Correlation | p |
B34 | Viral infection, unspecified site | 0.617 | < 0.0001 | 0.575 | < 0.0001 | 0.924 | < 0.0001 |
J11 | Influenza virus not identified | 0.613 | < 0.0001 | 0.545 | < 0.0001 | 0.935 | < 0.0001 |
J06 | Acute upper respiratory infection multiple and unspecified sites | 0.588 | < 0.0001 | 0.525 | < 0.0001 | 0.924 | < 0.0001 |
R55 | Syncope and collapse | * | * | * | * | 0.634 | 0.0149 |
J22 | Unspecified acute lower respiratory infection | 0.355 | < 0.0001 | 0.386 | < 0.0001 | 0.523 | 0.1044 |
S06 | Intracranial injury | 0.310 | < 0.0001 | 0.215 | 0.0050 | * | * |
T88 | Complications of surgical or medical care not specified elsewhere | 0.309 | < 0.0001 | * | * | * | * |
J20 | Acute bronchitis | 0.270 | 0.0003 | 0.328 | < 0.0001 | 0.116 | 0.6924 |
J00 | Acute nasopharyngitis (common cold) | 0.263 | < 0.0004 | 0.203 | 0.0090 | 0.362 | 0.2036 |
J18 | Pneumonia organism unspecified | 0.253 | 0.0006 | 0.294 | 0.0001 | 0.384 | 0.1754 |
Z20 | Contact & exposure to communicable disease | 0.219 | 0.0030 | * | * | * | * |
T40 | Poisoning by opium | 0.211 | 0.0050 | * | * | * | * |