What does box 3 on the CMS-1500 form indicate?

Box 3 on the CMS-1500 form is designated for the patient's date of birth and gender. This information is crucial for identifying the patient and ensuring accuracy in processing the claim. The patient's date of birth helps verify their identity and can also influence coverage and benefit determinations, while the gender is included for statistical purposes and can be relevant for certain medical procedures and diagnoses.

Correctly filling in this box is essential for claim processing, as it facilitates the insurance provider's ability to match the claim with the patient’s records. Understanding the information required in each box on the CMS-1500 form is key for anyone involved in medical billing and coding to ensure that claims are submitted accurately.