Iowa Code § 638.6
1. When disclosing digital assets of a user under this chapter, the custodian may at its sole discretion do any of the following:
4. If a user directs or a fiduciary requests a custodian to disclose some, but not all, of the user’s digital assets, the custodian need not disclose the assets if segregation of the assets would impose an undue burden on the custodian. If the custodian believes the direction or request imposes an undue burden, the custodian or fiduciary may seek an order from the court to disclose any of the following:
2017 Acts, ch 79, §9