AT

HCPCS Level II modifier that may be used with CPT or HCPCS Level II codes indicating acute treatment services.

At risk contract

Type of managed care contract between Medicare and a payer or a payer and a provider wherein patients receive care during the entire term of the contract even if actual costs exceed the payment established by the agreement.

Atmospheric Lake or Puddle –

These storms were newly discovered December 2021. Similar to atmospheric rivers, these are slow-moving pools of concentrated water vapor. The lakes or puddles start as rivers but then break off and become an isolated mass of concentrated water that can slowly move across the sky and even stop, depending on wind speed. They can hold enough water to create a puddle a few inches deep and 620 miles wide. So far they’ve been seen mostly near the equator.

Attach

In regard to the policy it means its inception, i.e. coming into force. In regard to legal liability, liability attaches when a party is legally responsible for some injury, loss or damage to a third party.

Attachment

See: claim attachment.

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The act of taking in to custody of the law either the person or the property of someone under and by virtue of an order of court.

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The legal process of taking possession of a defendant’s property when the property is in dispute.