KEY POINTS
  • Cigna announced it planned to acquire Express Scripts.
  • The deal combines a health insurer with a pharmacy benefits manager, or PBM.
  • CVS Health announced it would acquire Aetna in December.
Cigna signage displayed at the company's headquarters in Bloomfield, Connecticut.

Cigna buying Express Scripts is the latest example of convergence in the health-care industry, but it's not necessarily the most surprising in recent series of a deals.

The deal, valued at $67 billion, including debt, combines a health insurer with a pharmacy benefits manager, a firm that negotiates drug prices. It's a type of partnership that has become more common in an industry that's shedding traditionally rigid distinctions.