How to Track LCD Changes across the MACs

What an LCD is — and why it's the denial layer

A Local Coverage Determination is a decision by a Medicare Administrative Contractor about whether a particular item or service is reasonable and necessary, and therefore covered, within that contractor's jurisdiction. Unlike a National Coverage Determination, which applies everywhere, an LCD applies only in its MAC's region — so the same service can be covered under one contractor and restricted under another.

Because LCDs encode the medical-necessity criteria a claim is actually adjudicated against, they are where most coverage denials originate. A national rule rarely tells you whether your MAC just tightened the diagnosis criteria for a code you bill weekly — the LCD does.

How an LCD change happens

Since the LCD process reforms, new and revised LCDs follow a defined, public path rather than appearing without warning:

• Proposed LCD posted: The MAC publishes a proposed LCD, opening a public comment period of at least 45 calendar days.
• Comment and open meeting: Stakeholders comment, and the MAC holds an open public meeting; a Contractor Advisory Committee provides clinical input.
• Final LCD with a notice period: The MAC publishes the final LCD with a notice period — at least 45 days — before it takes effect, so teams can prepare.
• Revisions and retirements: Existing LCDs are revised or retired over time; each change has its own effective date to track.

LCDs vs. Billing & Coding Articles — where the codes live

The codes were moved out of LCDs. Today an LCD states the coverage policy in prose, while the specific CPT/HCPCS and ICD-10 codes that operationalize it live in an associated Billing & Coding Article. That split matters for tracking: the Article can be updated to add or remove a code — changing exactly what's payable — without the full proposed-LCD process. Watching the LCD alone misses the code-level changes that hit claims.

How to track LCD changes across jurisdictions

Tracking LCDs by hand means watching seven contractors' coverage pages plus their associated Articles, each on its own cadence. A workable approach:

• Know your jurisdiction(s): Map which MAC adjudicates your claims — and any others if you bill across regions.
• Track LCDs and their Articles together: Follow each LCD and its associated Billing & Coding Article, since the code-level change usually lands in the Article.
• Watch effective dates, not just postings: An LCD's notice period is your window to update coverage logic before the change is live.
• Connect changes to your codes: Filter the firehose to the LCDs that reference codes you actually bill — that's the signal.

How CLV Intelligence tracks LCD changes

CLV Intelligence monitors the Local Coverage Determinations and Billing & Coding Articles of all seven MACs every business day, scores each change by impact, and links it back to the source — so an LCD revision and the Article code change that enforces it reach the people who bill before the effective date. See the LCD monitoring software page for how the product works, or watch the live alert feed for changes as they post.