What is the name for policy endorsements that may apply to more than one coverage part?

The term for policy endorsements that can apply to multiple coverage parts is "interline endorsements." Interline endorsements are designed to streamline the policy process by allowing certain modifications to apply across different segments of a policy rather than being specific to a single coverage. This enhances efficiency and ensures consistency in terms of the coverage provided by the policyholder.

In contrast, cross endorsements typically refer to endorsements that link or connect different policies rather than endorsing multiple coverage parts within the same policy. Additional endorsements usually pertain to endorsements that provide coverage that is supplementary or beyond the limits set by standard policy coverage but do not specifically indicate applicability across multiple coverage parts. Supplemental endorsements may enhance existing coverage but again are more specific and do not inherently suggest coverage applicability across multiple areas. Thus, interline endorsements are the correct term to describe endorsements that apply across different coverage parts, focusing on the unified application rather than supplemental or specific modifications.