Table 1.

Search terms and diagnoses of pneumonia.

Term	Description
Non-invasive pneumonia
ICD-9-CM code 480	Viral pneumonia
ICD-9-CM code 481	Pneumococcal pneumonia
ICD-9-CM code 482	Other bacterial pneumonia
ICD-9-CM code 483	Pneumonia due to another specified organism
ICD-9-CM code 484	Pneumonia in infectious diseases classified elsewhere
ICD-9-CM code 485	Bronchopneumonia, organism unspecified
ICD-9-CM code 486	Pneumonia, organism unspecified
ICD-9-CM code 487	Influenza

ICD-9-CM, International Classification of Diseases, Ninth Revision, Clinical Modification.