Generally, you may claim a parent as a qualifying relative dependent if the following are true:
For more information, refer to IRS Publication 501 Dependents, Standard Deduction, and Filing Information. You may also wish to utilize the IRS Interactive Tax Assistant (ITA) topic Whom May I Claim as a Dependent?
Note that any link in the information above is updated each year automatically and will take you to the most recent version of the document at the time it is accessed.