Final answer:
The document from Steven Brill's Bitter Pill article in Time Magazine that explains the high cost of medical bills is not specifically named in the provided references. The references do offer a broader context on healthcare costs and policy.
Step-by-step explanation:
The document referenced in Steven Brill's Bitter Pill article in Time Magazine, which explains the driver of high medical bills, is not directly named in the provided information. However, the article discusses various factors contributing to the high cost of healthcare in the United States, such as the complexity of insurance programs, the price of medical tests and treatments, and the administrative costs associated with health services.
Understanding the intricacies of the healthcare system and identifying key documents or reports that outline these costs can be challenging. The referenced materials provide insight into the broader context of healthcare policy and costs but do not specify the document described by Steven Brill.