What type of details are required in box 15 of the CMS-1500 form?

Box 15 of the CMS-1500 form is designated for recording the date of the current illness, injury, or pregnancy. This information is critical as it helps insurers understand the timeline of the patient's condition, which is essential for determining the appropriateness of the care provided and for the processing of the claim. Accurate dating can also influence the eligibility of claims under certain policies or provide insights into the nature of the patient’s medical needs.

While the name of the patient’s employer, the healthcare provider's credentials, and the patient’s insurance plan type are relevant details in the context of a medical claim, they are recorded in different boxes of the CMS-1500 form and do not belong in Box 15.