A ransomware attack on Change Healthcare, the nation's largest clearinghouse for insurance claims and payments, has caused significant disruption across the U.S. healthcare system for over 13 days. The attack, attributed to the ALPHV/BlackCat ransomware gang, has hampered prescription drug sales at 90% of U.S. pharmacies, leading to billing delays, security concerns, and financial strain on healthcare providers. UnitedHealth Group, which recently acquired Change Healthcare, reportedly paid a $22 million ransom in Bitcoin to the attackers in an attempt to recover access to encrypted data and systems. The incident has sparked calls for federal intervention to support affected healthcare providers and has raised questions about the resilience of the U.S. healthcare system to cyberattacks.