Ariz. Admin. Code § 9-22-1001
In addition to the definitions in A.R.S. . §§ 36-2901, 36-2923 and 9 AA.C. 22, Article 1, the following definitions apply to this Article:
"Absent parent" means an individual who is absent from the home and is legally responsible for providing financial and/or medical support for a dependent child.
"Cost avoid" means to deny a claim and return the claim to the provider for a determination of the amount of first-or third-party liability.
"First-party liability" means the obligation of any insurance plan or other coverage obtained directly or indirectly by a member that provides benefits directly to the member to pay all or part of the expenses for medical services incurred by AHCCCS or a member.
"Third-party" means a person, entity, or program that is, or may be, liable to pay all or part of the medical cost of injury, disease, or disability of an applicant or member.
"Third-party liability" means any individual, entity, or program that is or may be liable to pay all or part of the expenditures for medical assistance furnished to a member under a state plan.
Ariz. Admin. Code § R9-22-1001