When you need to retrieve records quickly for a large stream of admissions, a straight numeric filing system makes the most sense. Each patient gets a unique, consecutive number, so locating a chart is a simple matter of following a predictable numeric index or path. There’s no ambiguity even if names are common or spellings vary, and this system scales cleanly as more patients are admitted, keeping retrieval fast and consistent for hundreds of records. Alphabetic filing, by contrast, relies on patient names. Names can be shared, changed, or misspelled, which can slow retrieval and increase the chance of selecting the wrong chart in a busy setting. Color-coded IDs introduce potential confusion if colors are misread or if color codes aren’t perfectly maintained, and they add an extra layer of lookup to map colors to specific patients. Geographic zoning groups records by location, which disperses records and makes it harder to pull a chart quickly when you’re dealing with many admissions in sequence. So a straight numeric system offers the most efficient, unambiguous, and scalable way to access records for a large number of consecutively admitted patients.