Texas Health and Safety Code - HEALTH & SAFETY § 145.016. Disclosure of Record Prohibited;  Exception

(1) if the customer, or a person authorized to act on behalf of the customer, requests the record;

(2) if a health authority requests the record under Section 145.011;

(3) if the customer consents in writing to the disclosure to another person;

(4) in a criminal proceeding in which the customer is a victim, witness, or defendant;

(5) if the record is requested in a criminal or civil proceeding by court order or subpoena;  or

(6) as otherwise required by law.