What Is Eligibility Verification? A Guide for Home Health Agencies

Before you send an aide to a patient's home, you need to know one thing: will you get paid? Eligibility verification answers that question. It confirms that a patient has active coverage under a specific payer—Medicare, Medicaid, or a commercial plan—on the date you plan to provide services.

For home health agencies, eligibility verification is not optional. It is the difference between billable visits and write-offs. (Related: Medicaid Eligibility Churn: The Silent Revenue Killer and our comparison of eligibility monitoring tools.)

How Eligibility Verification Works

At the technical level, eligibility verification uses the HIPAA 270/271 electronic transaction. Your system sends a 270 request (an eligibility inquiry) to the payer. The payer responds with a 271 (an eligibility response) that contains the patient’s coverage status, plan details, co-pay amounts, and any benefit limitations.

This exchange happens electronically through healthcare clearinghouses. The entire round trip typically takes a few seconds.

The 271 response tells you:

• Whether the patient has active coverage as of the date you queried
• Which plan or managed care organization is responsible
• Whether the patient is in a Medicare Advantage or traditional Medicare plan
• Co-insurance, co-pay, and deductible information
• Any benefit period limitations or prior authorization requirements

When to Verify Eligibility

Most agencies verify eligibility at one or more of these points:

At intake. When a new patient is admitted, you verify that they have active coverage under the payer you plan to bill. This is the minimum. Every agency should be doing this.

Before each billing cycle. Some agencies verify eligibility for all active patients before submitting claims. This catches coverage changes that happened since the last check, but it means you may have already provided services to a patient who lost coverage during the billing period.

On a rolling schedule. The most thorough approach is to verify eligibility on a regular cadence—weekly or monthly—for all active patients, independent of the billing cycle. This is the approach that catches coverage lapses earliest.

Why Coverage Changes Without Warning

Patient eligibility is not static. Coverage can change for dozens of reasons:

• Medicaid redetermination. States require annual redetermination of Medicaid eligibility. If a patient misses the paperwork deadline or their income changed, coverage can lapse.
• Managed care plan changes. Medicaid managed care organizations reassign patients during open enrollment periods. A patient who was in Plan A last month may be in Plan B this month—and Plan B may require a different authorization process.
• Medicare Advantage enrollment changes. Patients can switch Medicare Advantage plans during the Annual Election Period (October 15 to December 7) and the Open Enrollment Period (January 1 to March 31). Your billing may need to change accordingly.
• Spend-down status. Medicaid patients with income above the threshold may have coverage that starts and stops based on their monthly medical expenses meeting the “spend-down” amount. This creates irregular coverage patterns.
• Death, relocation, or aging out. Patients die, move out of state, or age into Medicare. Each event changes their eligibility profile.

None of these changes are communicated to your agency proactively. You find out by checking, or you find out when a claim is denied.

The Cost of Not Verifying

When you provide services to a patient who has lost coverage, the cost is straightforward: you do not get paid. The aide was paid. The mileage was incurred. The documentation was completed. But the revenue is zero.

For a typical home health visit billed at $150 to $250, the loss per visit is significant. For a patient receiving daily visits, a two-week coverage lapse represents 10 visits of unrecoverable revenue from a single patient.

Manual Verification vs. Automated Monitoring

Manual eligibility verification means logging into a payer portal—or multiple payer portals—entering each patient’s information, and recording the result. For a 100-patient census across three payers, that is 100 or more portal lookups per check. For a comparison of tools that automate this process, see Best Eligibility Monitoring Software for Home Health (2026).

Manual verification has three problems. First, throughput: it takes time, and it does not scale. Second, timing: if you only verify monthly, you have up to 30 days of exposure between checks. Third, human error: missed patients, typos in member IDs, and forgotten follow-ups all create gaps.

Automated eligibility monitoring solves all three. The system sends 270 requests on a schedule, processes the 271 responses, and alerts you only when something has changed. No portal logins. No spreadsheets. No missed patients.

How ClientCare Handles Eligibility Verification

ClientCare runs automated eligibility checks against payer systems on a rolling schedule. When you upload your patient roster, we begin monitoring every patient’s coverage status.

When we detect a change—a coverage lapse, a plan switch, or an eligibility expiration—we surface a risk ticket on your dashboard immediately. The ticket tells you which patient is affected, what changed, and when the change was effective.

You can take action before the next visit instead of finding out after a denial.