Understanding alternative benefits in daily practice

Alternative benefit provisions — often referred to as Least Expensive Alternative Treatment (LEAT) clauses — remain a frequent source of confusion for both dentists and patients.

What’s a LEAT?

A LEAT is a benefit determination tied to reimbursement methodology, not a clinical determination about diagnosis, necessity or appropriateness of care.

When more than 1 professionally acceptable treatment option exists for a given condition, a dental benefit plan may calculate reimbursement based on the least costly option defined within the plan, even when a different procedure is performed. The dentist’s diagnosis, treatment recommendation and responsibility to the patient do not change.

LEAT determinations:

• Define how a plan contributes financially
• May increase patient out of pocket responsibility
• Don’t alter diagnosis, indication or treatment planning
• Don’t represent clinical recommendations

Why do benefit plans use LEATs?

Dental benefit plans use a LEAT to standardize reimbursement and manage benefit liability when multiple treatment options are considered acceptable under the plan’s design. These provisions define how benefits are calculated, not how individual patients should be treated.

LEAT frameworks operate independently from:

• Risk based diagnosis
• Structural longevity considerations
• Material selection
• Aesthetic outcomes
• Patient specific functional demands

Recognizing this separation helps keep benefit decisions from being mistaken for treatment recommendations.

Common examples of how LEATs appear in general practice

A relatively small group of procedures accounts for most LEAT related confusion in everyday practice. These scenarios tend to involve high frequency restorative services and carry the greatest impact on patient communication. This includes:

• Crowns and onlays: A crown or onlay is submitted, but the plan calculates reimbursement as if a large filling were placed. The documentation may not clearly demonstrate greater than 50% structural loss, cusp involvement or functional compromise requiring full coverage.
• Build ups (D2950): Build ups are reimbursed only when records show retention for the crown or significant loss of tooth structure. Irregularities or undercuts alone do not meet that threshold.

Fixed bridges or implants: A fixed bridge or implant based restoration is reimbursed at the level of a removable partial denture (RPD). Many benefit designs define RPDs as the least costly acceptable method for replacing multiple missing teeth.