(Bloomberg) — Aetna Inc. (NYSE:AET) was ordered by U.S. regulators to change its Medicare Part D drug plan program.
The Centers for Medicare & Medicaid Services (CMS) said Aetna violated federal regulations by shutting some qualified pharmacies out of its pharmacy network.
Aetna, the third-largest U.S. health insurer, didn't allow all pharmacies that met its plan's terms and conditions to participate in its network, CMS said in a letter to the company. Aetna must develop a plan to follow the regulation or face potential fines or other sanctions, the agency said.