For special education directors and school business managers, few compliance requirements carry as much financial weight as the Random Moment Time Study. It runs quietly in the background of your school-based Medicaid program, yet it directly determines how much reimbursement your district receives. When RMTS participation slips, the consequences are not limited to a single missed response. They can pull down your entire claiming pool. Understanding how RMTS works, and why it matters, is the first step toward protecting the Medicaid dollars your district has already earned.
What Is a Random Moment Time Study?
The Random Moment Time Study, commonly shortened to RMTS, is a federally required methodology used to calculate the percentage of staff time that qualifies for Medicaid reimbursement. Rather than asking staff to track every minute of every day, the RMTS uses statistical sampling. At random points during the school year, selected staff members receive a query asking what activity they were performing at that specific moment. Their responses are compiled to build a statistically valid picture of how much staff time is spent on Medicaid-reimbursable, health-related activities versus general education duties.
That percentage is not a minor detail. It is the engine that drives your reimbursement. The results of the time study have a major impact on local education agency reimbursement, because they determine what share of your program costs can be claimed. Any local education agency seeking reimbursement through Administrative Activity Claiming or Direct Service Claiming must be included in an RMTS pool, so the state can understand where staff time is actually being spent.
Why the 85% Response Rate Matters So Much
For a Random Moment Time Study to be statistically valid, a high percentage of sampled staff must respond to their assigned moments. In Massachusetts, the School-Based Medicaid Program requires a minimum 85% response rate from sampled staff. Staff members are typically given a short window, often two school days, to respond to each query before it expires.
Falling below the 85% threshold is where districts get into trouble. A low response rate does more than reduce the value of a few individual moments. It can reduce the district’s overall reimbursement rate and put the entire claiming activity under additional scrutiny. In other words, missing moments do not just cost you the reimbursement tied to those specific moments. They can jeopardize the pool as a whole. That is why RMTS compliance is treated as one of the most consequential requirements in the program.
The Real-World Challenge for Districts
On paper, responding to a random moment sounds simple. In practice, keeping response rates above the threshold is one of the hardest parts of running a compliant program. The core problem is that the people being sampled, such as speech therapists, occupational therapists, school nurses, and other service providers, are focused on supporting students, not on billing requirements. A random moment notification can easily get buried in a cluttered inbox and expire before the staff member ever sees it.
Certain times of year make this even harder. Staffing changes are a major culprit. Summer transitions, new hires, retirements, and role changes are the single biggest reason participant lists go stale, and an inaccurate participant list undermines the whole study. Extended breaks create similar risk. When staff mentally or physically check out for a holiday, a moment generated for someone who is out of the building often goes unanswered and counts as a non-response rather than an excused absence. Without someone actively monitoring participation, response rates can quietly drift below 85% before anyone notices.
How the Time Study Connects to the Rest of Your Claiming
The Random Moment Time Study does not operate in isolation. It is part of a larger claiming structure that includes both Direct Service Claiming and Administrative Activity Claiming. Under both approaches, RMTS monitoring and quarterly RMTS updates sit alongside administrative cost reporting, Medicaid eligibility enrollment reports, staff training, and data analysis, all while maintaining HIPAA and FERPA compliance. The time study feeds the cost reporting and claiming process, which is why an accurate, well-monitored study is foundational to everything else. If the RMTS data is weak, the claims built on top of it are weak too.
This is also why documentation quality throughout the program matters. Service notes, service logs, eligibility records, and RMTS responses all need to align. When they do, claims move cleanly. When they do not, reimbursement is left on the table.
How NEMB Helps Districts Stay Compliant
Meeting the 85% RMTS compliance requirement does not have to fall entirely on your already stretched staff. This is exactly the kind of ongoing oversight that a specialized partner is built to handle. Through our school-based Medicaid billing services, NEMB actively monitors RMTS participation for our school district clients. We track response rates, flag at-risk staff before a quarter closes, and send daily reminders that make it simple for staff to answer a query and get back to their day. We track your district’s submissions and can report where your district stands at any point in time.
Technology plays a central role in that support. SimpleNote, our free proprietary software, simplifies the daily task of IEP service note taking for your staff. It is 100% HIPAA and FERPA compliant, meets state and federal guidelines, and can be customized by state. By reducing the documentation burden on providers and helping keep participation on track, tools like SimpleNote help districts stay positioned to meet the response threshold the program requires.
Since 1993, the experts at NEMB have worked with schools to sharpen our approach to school-based Medicaid claiming and billing, and RMTS compliance sits at the heart of that work. Our goal as your partner is to make sure your district gets the most out of its Medicaid program.
Protect the Reimbursement You Have Already Earned
The Random Moment Time Study may run in the background, but its impact on your budget is front and center. A strong, well-monitored study supports accurate reimbursement. A neglected one puts your entire claiming pool at risk. With the right partner and the right tools, staying above the 85% threshold becomes far more manageable.
If you want to strengthen your district’s RMTS compliance and maximize your Medicaid reimbursement, schedule a free consultation with the NEMB team or call 888-771-6115 to speak with a specialist today.
