On the other side of every claim is the payer. In America, the payer is usually one of these:
- a health plan, which is what Americans call a health insurance company or its policy
- Medicaid, the health insurance for Americans on low incomes, run by each state
- Medicare, the federal government's health insurance for people over 65
The payer's core system holds its members, the people it insures, and its contracts with providers. It checks each claim against them, decides, and pays. Around the core run two more jobs:

This Market Segment is about the core system and these decisions. The buyers are health plans and state governments. The checks on claims and the care programmes sold to the same payers are covered in Market Segment 21.6, Health plan claims and care management
Every company named here has posted software engineering jobs in India. Famous companies that don't actively hire software engineers in India are left out.
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Back to the skin doctor's claim from the start of this Market Segment, now inside the insurer.
Now suppose the skin doctor wants to prescribe an expensive treatment, which needs approval first. The next two companies decide such requests. The industry calls this utilisation management.
One company here works in India instead:
Prior authorisation is the most hated process in American healthcare. It delays care while the paperwork is reviewed. New federal rules now require payers to decide faster, and electronically.

Who these companies hire, and for what, is on What health insurance and billing companies hire for.