ANSI X12 837P - 1000B - Receiver Name Loop

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Written by Mike

November 21, 2020

The 837 Health Care transaction for professional claims is comprised of loops, segments and data elements. The 1000B loop is referred to as the Receiver Name Loop. The Receiver Name loop contains the information on the entity who is receiving the file. The receiver could be a Clearinghouse or the actual payer if the claims are being sent direct.

There are basically two different versions of the 837P transaction. The initial variation referred to as 4010 and the most recent variation referred to as 5010.

We have two examples of the 1000B Receiver Name Loop below. The first one is for the current 5010 format and the second is for the older 4010 format.


Sample 837P (5010) - 1000B - Receiver Name Loop

> Receiver Name (1000B) NM1*40*2*RECEIVER*****46*RECEIVERID~

5010 Segment Details


Sample 837P (4010) - 1000B - Receiver Name Loop

> Receiver Name (1000B) NM1*40*2*RECEIVER*****46*RECEIVERID~

4010 Segment Details


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