Box 21 on the CMS-1500 form is used to provide the diagnosis or nature of

The NPI (National Provider Identifier) number on the CMS-1500 form is a unique 10-digit identification

On the CMS-1500 form, the provider type refers to the role or specialty of the

The Place of Service (POS) Codes are used on the CMS-1500 form to specify the

No. If you are printing the entire form, including the red “OCR” background, you must