To record the rendering provider's NPI, which block should you fill?

To record the rendering provider's NPI, which block should you fill?

• A. Block 24i
• B. Block 25
• C. Block 26
• D. Block 27

Answer: (A)

The rendering provider’s NPI is entered in Block 24i. This part of the CMS-1500 form is dedicated to the service-line provider information, so placing the 10-digit NPI here ties the specific service line to the clinician who performed the work. It helps the payer identify who rendered the service for that line item and ensures correct adjudication, even if another provider’s details appear elsewhere on the claim. Other data on the form are handled in different blocks and aren’t meant for recording the rendering provider’s NPI.

The rendering provider’s NPI is entered in Block 24i. This part of the CMS-1500 form is dedicated to the service-line provider information, so placing the 10-digit NPI here ties the specific service line to the clinician who performed the work. It helps the payer identify who rendered the service for that line item and ensures correct adjudication, even if another provider’s details appear elsewhere on the claim. Other data on the form are handled in different blocks and aren’t meant for recording the rendering provider’s NPI.