Please disregard my previous reply. I deleted the reply because I'm not sure it was right.
Can you please clarify what you mean by "text ID number".
To claim your parents as dependents, they must have either a Social Security number (SSN) or an Individual taxpayer identification number (ITIN).
You cannot file as Head of Household if you cannot claim a dependent.
If your parents are resident aliens, you can use Whom May I Claim as a Dependent? to determine the answer based on your circumstances. Go through the quick quiz for each parent.
You may also want to use What Is My Filing Status?