CMS 1500 FIELD 30- Reserved for NUCC Use

FIELD 31- Signature of Physician or Supplier Including Degrees or Credentials


The “Signature of the Physician or Supplier Including Degrees or Credentials” refers to the authorized or accountable person and the degree, credentials, or title.

NUCC INSTRUCTIONS“Signature of Physician or Supplier Including Degrees or Credential” does not exist in 5010A1.

Enter the legal signature of the practitioner or supplier, signature of the practitioner or supplier representative, “Signature on File,” or “SOF.” Enter either the 6-digit date (MM|DD|YY), 8-digit date (MM|DD|YYYY), or alphanumeric date (e.g., January 1, 2003) the form was signed.

MEDICARE INSTRUCTIONS: Enter the signature of provider of service or supplier, or his/her representative, and either the 6-digit date (MM | DD | YY), 8-digit date (MM | DD | CCYY), or alpha-numeric date (e.g., January 1, 1998) the form was signed.

In the case of a service that is provided incident to the service of a physician or non-physician practitioner, when the ordering physician or non-physician practitioner is directly supervising the service as in 42 CFR 410.32, the signature of the ordering physician or non-physician practitioner shall be entered in item 31. When the ordering physician or non-physician practitioner is not supervising the service, then enter the signature of the physician or non-physician practitioner providing the direct supervision in item 31.
NOTE: This is a required field; however, the claim can be processed if the following is true: if a physician, supplier, or authorized person's signature is missing, but the signature is on file; or if any authorization is attached to the claim or if the signature field has "Signature on File" and/or a computer generated signature.

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