Yes, you can import your petty cash expense account to QuickBooks, bhumit1986.
Here's how to do it:
Note: New accounts will be added to the existing ones you already have in your Chart of Accounts. The Type and Detail Type are built-in on the program so we’re unable to add new types.
Please check out this article for your reference: Import Chart of Accounts.
If you have additional questions, please let me know. I'm here to help you.