Pneumonia. It’s one of the first conditions we learn to diagnose as medical students. It was probably the cause of the first really sick, septic geriatric patient you saw in residency. Conversely you have also probably sent a fair share of patient’s home with an outpatient course of antibiotics and PCP follow-up.  While determining the appropriate treatment and disposition for patients on the extreme ends of illness severity is quite straight forward; that pesky majority in the middle can be a conundrum at times. Who can go home? Who needs broad spectrum? Who needs step-down? Over the last two decades there has been a smorgasbord of pneumonia related acronyms used in clinical practice to predict severity, guide therapeutics and recommend disposition. During our most recent resident Journal Club, we took a look at a handful of the more familiar acronyms as well as some new ones coming down the pipeline.