depends on context, but "other dependents" should usually work for you

Person covered by someone else's health plan. In a payer's policy of insurance, a person other than the subscriber eligible to receive care because of a subscriber's contract.
www.pohly.com/terms_d.html

One who derives existence and support from another.
www.id.uscourts.gov/terms-cd.htm

Any natural or legally adopted child residing at the same residence as injured employee who is under the age of 18, and/or any child certified legally handicapped over the age of 18.
www.personal-injury-help-center.org/Glossary_of_Terms.html

An individual, usually a spouse or child, who depends on another for financial support and maintenance.
www.kellerlowry.com/glossary/glossary_d.htm