A healthcare clearinghouse is a company that receives claims from many clinics and hospitals, checks them, and delivers each one to the right insurer. It is also called a claims clearinghouse. Clearinghouses are a feature of medical billing in the United States, where one clinic may bill dozens of insurers, and each insurer has its own systems and its own rules.
Why is it needed? Without a clearinghouse, a clinic would need a separate connection to every insurer. Instead, it connects once. It sends all its claims to the clearinghouse through one website or one API, a defined way for one program to send requests to another. The clearinghouse then sends each claim to the correct insurer.
US law sets a standard electronic format for these messages. The claim itself is a message called an 837. The check of a patient's cover is a pair of messages: the clinic's question, called a 270, and the insurer's answer, called a 271. The clearinghouse converts each clinic's data into these formats and back.
Consider a physiotherapy practice in Atlanta, Georgia, in the United States. It sends about 400 claims a week to 25 different insurers. On Monday evening, its revenue cycle management (RCM) system sends 400 claims to the clearinghouse. Within minutes, the clearinghouse checks each one for errors that the insurer would reject. It finds 12 claims with mistakes, such as a missing insurance ID number or a diagnosis code that does not exist. It sends those 12 back to the practice to fix. It delivers the other 388 to the insurers' health plan administration systems. Each insurer then sends an acknowledgement back through the clearinghouse.
The same connection serves the front desk. When a patient books an appointment, patient scheduling and intake software can ask the clearinghouse whether the patient's insurance is active. The answer comes back in a few seconds, with details such as the copay the patient must pay.
A rejection by a clearinghouse is different from a denial by an insurer. A rejection means the claim was not in the right form, so the insurer never saw it. A denial means the insurer saw the claim and decided not to pay.
India has a public system for a similar job. The National Health Claims Exchange (NHCX) carries cashless claims between Indian hospitals and insurers in one standard format. Its message design is based on the same idea of interoperability: different systems exchanging data in a format that all of them understand.