Why Can I Only Select 4 Diagnosis (ICD-10) Codes for Diagnosis Pointers?

Only 4 ICD-10 codes can be included as pointers for each line item. However, up to 12 ICD-10 codes (the first 12 of which were entered through the Assessment screen and can be seen listed in the picture below) will go on the claim itself.

This is a limitation of the paper and electronic format for the CMS 1500 billing form.

If you look at the paper HCDFA 1500 form, the 12 for the claim go in block 21 and then on each line item, you can have up to 4 pointers (ex. ABCD or 1234) in block 24 E.