HCFA-1500 Box 32a - NPI
August 31, 2025HCFA Box 32a on the CMS-1500 claim form is used to report the Service Facility NPI. Learn how to enter this 10-digit identifier and see how it maps to the 2310C NM109 element in the X12 837P electronic claim.
HCFA-1500 Box 32 - Service Facility Location Information
August 28, 2025HCFA-1500 Box 32 reports the service facility location when different from the billing provider. In the 837P 5010, it maps to loop 2310C (NM103, N301, N401, N402, N403)
HCFA-1500 Box 31 - Signature of Physician or Supplier Including Degrees or Credentials
August 25, 2025HCFA-1500 Box 31 captures the provider’s signature and date, certifying claim accuracy. In the 837P 5010, this maps to CLM06, typically reported as “Y” (signature on file).
HCFA-1500 Box 30 - Rsvd for NUCC Use
August 25, 2025HCFA-1500 Box 30 is reserved for NUCC use on the 02/12 form and should be left blank; there is no 837P mapping or data entry required.
HCFA-1500 Box 29 - Amount Paid
August 25, 2025HCFA-1500 Box 29 reports the amount already paid by the patient or another insurer. Learn how this value maps to AMT02 in the X12 837P 5010 at the claim or COB level.