Pneumonia is caused by a viral or bacterial infection that fills your lungs with mucus. This lowers the oxygen level in your blood.


The Appropriate Care Measure (ACM) is a patient-centered composite score that captures whether or not a patient received all of the recommended treatments they were eligible to receive, based on their specific condition.

A quality measure is medical information from patient records converted into a rate or percentage that shows how well hospitals care for their patients. You can use this quality information to help you compare hospitals.