The search parameter for patient name states:

A server defined search that may match any of the string fields in the HumanName, including family, give, prefix, suffix, suffix, and/or text

https://www.hl7.org/fhir/us/core/SearchParameter-us-core-patient-name.html

However, this isn't accurate, because the real requirement on search by name is listed in the 'Mandatory Search Parameter' section of the Patient Profile:

SHALL support searching for a patient by a string match of any part of name using the name search parameter

https://www.hl7.org/fhir/us/core/StructureDefinition-us-core-patient.html#mandatory-search-parameters

The search parameter description should be updated to have the same language that is in the profile to avoid confusion.