What document is filed if the cause of death cannot be determined within 48 hours after death?

The correct choice is the Pending Certificate of Death. This document is specifically designed to be filed when the cause of death is not immediately determinable within the standard timeframe following a death, which is typically 48 hours. The Pending Certificate of Death allows for the necessary time to further investigate the cause of death, such as awaiting results from autopsies, toxicology reports, or further review by medical professionals.

This system of documentation ensures that the official record reflects the situation accurately, while still allowing time for the gathering of important information that may be required for finalization of the death certificate. It serves an essential role in maintaining accurate and complete death records, which can be crucial for legal, statistical, and health-related purposes. In contrast, other options do not precisely serve this function or may not exist within the typical regulatory frameworks surrounding death documentation.