Insurance Claims Glossary: Key Terms and Definitions

Insurance claims involve a distinct vocabulary that shapes how policies are interpreted, how disputes are resolved, and how payments are calculated. This glossary covers the core terms used across property, casualty, health, life, and liability claims in the United States. Precise definitions matter because a misunderstood term — such as confusing "actual cash value" with "replacement cost" — can result in thousands of dollars of difference in a payout. The definitions here draw on language used by the National Association of Insurance Commissioners (NAIC), state insurance codes, and published industry standards bodies.

Definition and scope

An insurance claims glossary serves as a standardized reference framework for the specialized terminology embedded in policy language, claims procedures, and dispute resolution processes. The National Association of Insurance Commissioners (NAIC) publishes model laws and consumer guides that establish baseline definitions adopted — with variation — by the insurance departments of all 50 states and the District of Columbia.

The scope of claims terminology spans at least 5 distinct functional domains:

1. Policy and coverage terms — language defining what is and is not covered
2. Valuation terms — methods for calculating claim payments
3. Procedural terms — steps, deadlines, and documentation requirements
4. Party-role terms — who each participant in the claims process is
5. Dispute and remedy terms — mechanisms for challenging or resolving claim decisions

Understanding these categories helps distinguish between a coverage question (whether a loss is insured) and a valuation question (how much the insurer owes). These are legally separate issues under most state insurance codes, including the NAIC's Unfair Claims Settlement Practices Model Act, which 47 states have adopted in some form.

How it works

Claims terminology operates within a layered system: the policy contract defines terms at the contract level, state statutes impose minimum standards, and federal law applies in specific lines such as Medicare supplement or flood insurance through the Federal Emergency Management Agency's (FEMA) National Flood Insurance Program (NFIP).

Core glossary terms and definitions:

Actual Cash Value (ACV): The fair market value of property at the time of loss, calculated as replacement cost minus depreciation. Contrast this with replacement cost value, which pays to repair or replace without deducting depreciation. The difference between these two methods is a central factor in actual cash value vs replacement cost disputes.

Adjuster: A licensed professional who investigates and evaluates insurance claims on behalf of the insurer (staff adjuster), the policyholder (public adjuster), or independently (independent adjuster). State licensing requirements for adjusters are codified in each state's insurance code; the NAIC maintains a Uniform Adjuster Licensing Standards Model Act.

Claim: A formal request by a policyholder or third party asking an insurer to pay for a covered loss under the terms of a policy.

Coverage: The scope of protection provided by a policy for specified perils, parties, or property.

Deductible: The out-of-pocket amount the insured must pay before the insurer's obligation begins. Deductibles can be flat dollar amounts or percentage-based (common in wind or hail policies).

Depreciation: The reduction in value of property over time due to age, wear, or obsolescence. The distinction between recoverable and non-recoverable depreciation affects final settlement amounts — see recoverable vs non-recoverable depreciation for methodology detail.

Examination Under Oath (EUO): A formal investigative procedure in which the insured is required to answer questions under oath as a condition of the policy. Refusal to comply can constitute grounds for claim denial. The examination under oath claims process is governed by individual policy language and state law.

Excess and Surplus (E&S) Lines: Insurance placed with non-admitted carriers for risks that standard admitted markets decline to cover. E&S claims follow different regulatory pathways than standard admitted claims — covered in detail at excess and surplus lines claims.

First-Party Claim: A claim filed by the policyholder against their own insurer. Contrast with a third-party claim, filed against another party's insurer. The distinction matters for bad faith standards, prompt payment deadlines, and subrogation rights. See first-party vs third-party claims.

Indemnity: The principle that insurance restores the insured to the financial position held before the loss — no more, no less.

Loss Reserve: The amount an insurer sets aside to cover the estimated future payment on an open claim. Reserve adequacy is regulated under state insurance solvency requirements monitored by state insurance departments.

Proof of Loss: A sworn statement submitted by the policyholder documenting the nature, cause, and dollar amount of a claimed loss. Most policies establish a specific submission deadline — typically 60 days post-loss, though this varies by policy and state (proof of loss requirements).

Subrogation: The insurer's right, after paying a claim, to pursue recovery from the responsible third party. Subrogation recoveries reduce the insurer's net claim cost. The mechanics are detailed at subrogation in insurance claims.

Total Loss: A determination that repair costs exceed a defined threshold of the vehicle's or property's value, triggering replacement rather than repair settlement. In auto insurance, total loss thresholds are set by state regulation — total loss determination in claims covers state-specific thresholds.

Common scenarios

Glossary terms become practically significant at specific decision points in the claims lifecycle, as described in the insurance claims process overview:

Valuation disputes arise when the insured and insurer disagree on ACV or replacement cost calculations. The gap between the two methods can represent 20–40% of claim value on older structures, according to methodology published by the Insurance Information Institute.

Coverage disputes turn on policy-defined terms. Whether mold remediation qualifies as "direct physical loss" depends on the jurisdiction's case law interpreting that specific policy phrase. The NAIC's consumer resources outline the complaint process when coverage interpretations are disputed.

Prompt payment violations occur when an insurer fails to acknowledge, investigate, or pay a claim within the timeframes established by state statute. The NAIC's Unfair Claims Settlement Practices Model Act sets a baseline of 10 business days for acknowledgment and 30 days for acceptance or denial, though individual state adoptions vary.

Bad faith claims arise when an insurer unreasonably delays, denies, or undervalues a claim in violation of the covenant of good faith and fair dealing implied in all insurance contracts. Bad faith insurance claims standards differ between first-party and third-party contexts across states.

Decision boundaries

Glossary terms operate differently depending on the line of insurance and the jurisdiction. Three critical distinctions govern how terms are applied:

1. Admitted vs. Non-Admitted Carriers
Terms defined in policies from admitted (state-licensed) carriers are subject to state insurance department oversight and mandatory form filings. Non-admitted E&S carriers have greater policy language flexibility, which means the same term (e.g., "occurrence") may carry a non-standard definition.

2. State Law vs. Policy Language
When a policy defines a term more narrowly than state statute, state law typically governs. For example, if a state's prompt payment statute defines "claim" more broadly than the policy, the statutory definition controls the insurer's obligations. The relevant state insurance department — accessible through the NAIC's state directory — is the primary enforcement body.

3. Line-of-Insurance Boundaries
Valuation terms like ACV apply primarily to property and auto lines. Health insurance uses distinct terminology: "allowed amount," "explanation of benefits (EOB)," "prior authorization," and "coordination of benefits" are health-specific terms governed by the Centers for Medicare & Medicaid Services (CMS) for federally regulated plans and state insurance codes for individual and small-group markets. Workers' compensation claims operate under a separate statutory framework in each state, distinct from general liability or property claims vocabulary — see workers compensation claims for line-specific terminology.

The insurance claims statute of limitations adds a time-boundary dimension: the period within which a claimant must file suit varies by state (commonly 1–6 years depending on the claim type and jurisdiction), and missing a deadline can extinguish an otherwise valid claim entirely.

References

• National Association of Insurance Commissioners (NAIC)
• NAIC Unfair Claims Settlement Practices Model Act (MDL-900)
• NAIC State Insurance Department Contact Directory
• FEMA National Flood Insurance Program (NFIP)
• Centers for Medicare & Medicaid Services (CMS)
• Insurance Information Institute (III)
• NAIC Consumer Insurance Information