Which block on the CMS-1500 form indicates the date of service?

Block 24A on the CMS-1500 form is specifically designated for the "Date(s) of Service." This block allows healthcare providers to enter the exact date when the services were performed for the patient. Accurate documentation of the date of service is crucial for billing purposes, as it helps to ensure that claims are processed correctly and timely, aligning with insurance coverage periods and certain billing guidelines.

Other blocks serve different purposes: Block 1 is for the insured’s information, Block 22 is for the resubmission of claims or to indicate the original claim number, and Block 33 is where the provider's billing information and NPI (National Provider Identifier) can be entered. Understanding the specific use of each block is essential for accurately completing the CMS-1500 form and facilitating proper claim submissions to insurance companies.