Does the individual have a right to access PHI about themselves maintained by a covered entity that is very old or is archived?

Yes. An individual has a right to access PHI about themselves in a medical record or other designated record set maintained by a covered entity, regardless of the date the information was created or whether the information is maintained onsite, remotely, or is archived. There are only very limited grounds under which a covered entity may deny an individual access to PHI about herself in a designated record set, which do not include the age or location of the information. See 45 CFR 164.524(a)(2) – (a)(3).