Local Coverage Determinations: How MACs Use LCDs in an Audit

A Medicare Administrative Contractor denial that cites a Local Coverage Determination can look final, but it rests on a policy written for one jurisdiction, not a nationwide rule. A provider answering that denial needs to know which LCD version applied on the date of service, what the reviewer checked against the chart, and how much weight the policy carries on appeal. A pattern of LCD-based denials in a claim sample can become an extrapolated recoupment demand across the full audit period.

Who Issues an LCD and Its Jurisdiction

A Local Coverage Determination comes from a Medicare Administrative Contractor, the contractor CMS assigns to process Medicare Part A and Part B claims within a defined multi-state region. CMS's description of the coverage determination process confirms a MAC drafts the policy, opens it for public comment as a proposed LCD, and finalizes it for that contractor's jurisdiction alone, not the country. Recovery Audit Contractors apply the jurisdiction's existing LCD rather than writing their own. The same service can be covered on different terms one state over.

LCD vs NCD: Where Coverage Authority Sits

A National Coverage Determination sits above the LCD in CMS's coverage hierarchy. CMS writes and issues an NCD directly, after national clinical review, and it binds every Medicare contractor, every MAC, and every Medicare Advantage plan the same way nationwide. A MAC writes an LCD only to fill the space an NCD leaves open, because CMS decided not to set one national rule for that item or service and left contractors to write their own. A denial under one MAC's LCD does not predict how the same claim fares under a neighboring jurisdiction's policy.

How a MAC Reviewer Applies an LCD Claim by Claim

A medical reviewer checks each sampled claim against the LCD's criteria one at a time: the diagnosis codes the policy lists as covered, the frequency limit it sets, and the documentation elements it requires in the chart. CMS directs contractors, inside a Targeted Probe and Educate review or a standard post-payment audit alike, to apply the version of the LCD, and any companion billing and coding article, in force on the date of service under review, not the version current when the audit opens. A chart missing a required element, a diagnosis the LCD does not list, or a service billed past the stated frequency produces a denial regardless of whether the care itself was reasonable. Enough denials in the sample become an extrapolated recoupment demand projected across the full lookback period.

Finding the LCD Version in Force on the Date of Service

The Medicare Coverage Database is CMS's public repository for every live LCD and NCD, and it keeps a version history because a new version posts each time a MAC edits, re-approves, or reactivates a policy. Reconstructing a denial means searching the database by the LCD's document ID and entering the actual date of service, not today's date, since a blank date field returns the newest version. A MAC's current public LCD page typically shows only today's version. The historical version is available only through the database's archived search.

How Much Weight an LCD Carries on Appeal

The LCD loses some of its force once a claim passes reconsideration, well before it reaches an Administrative Law Judge. Under 42 CFR Section 405.1062, an ALJ, attorney adjudicator, or the Medicare Appeals Council is not bound by the LCD a lower-level reviewer applied, though each must give it substantial deference where it applies, and a departing decision has to explain why. A Qualified Independent Contractor at the reconsideration level applies this same standard under 42 CFR Section 405.968: not bound by the LCD either, but required to give it substantial deference and explain any decision not to follow it. The documentation the LCD requires still has to be built before the contractor's own determination, the stage at which the LCD is fully binding.

An LCD binds the Medicare Administrative Contractor that wrote it, but it carries only persuasive weight from the reconsideration stage onward.

Why Early Legal Counsel Is Critical

It is critical that providers promptly retain experienced healthcare defense counsel upon receiving a Medicare audit request, an additional documentation request (ADR), or a denial citing a Local Coverage Determination. Early legal intervention can protect the provider's rights, build the documentation record the LCD requires before a sample of denials becomes a recoupment demand, avoid inadvertent admissions during the records exchange, and position the matter for the more favorable standard it receives once the matter reaches reconsideration, the appeal level after the contractor's own redetermination. Delaying representation can narrow the options available by the time the first appeal level closes.

How Health Law Alliance Can Help

Health Law Alliance's attorneys have overseen 2,000+ audits and handled 5,000+ matters, with 25+ years of experience. If a Medicare Administrative Contractor has denied claims citing a Local Coverage Determination, or placed your claims in prepayment review ahead of a broader audit, contact Health Law Alliance's Medicare audit defense attorneys for a free, confidential consultation before the response window runs.