A LUPA threshold is the minimum number of home health visits a patient must receive during a 30-day billing period for the home health agency to collect its full Medicare payment. LUPA stands for Low Utilization Payment Adjustment. If the total visits fall below that threshold, Medicare pays the agency a smaller, per-visit rate instead of the standard lump-sum payment for the entire period of care.
How the Threshold Works
Under Medicare’s Patient-Driven Groupings Model (PDGM), every home health billing period covers 30 days. Each period is assigned to one of 432 case-mix payment groups based on the patient’s clinical characteristics. Every one of those 432 groups has its own specific LUPA threshold, meaning the minimum visit count varies from patient to patient depending on their group assignment.
CMS calculates each threshold by looking at the 10th percentile of visits within that payment group. In other words, the threshold sits at the low end of what patients in that group typically need. No threshold drops below two visits, so every 30-day period requires at least two visits to qualify for the full payment rate.
The math is straightforward: if your patient’s group has a LUPA threshold of four and you provide four or more visits in the 30-day period, the agency receives the full case-mix adjusted payment. Provide three visits, and Medicare pays only the national per-visit rate for each of those three visits, which is almost always significantly less money.
What Determines a Patient’s Threshold
The 432 payment groups are built from five patient characteristics that combine in a formula of 2 × 2 × 12 × 3 × 3. These factors include the timing of the episode (early vs. late in the sequence of care), the admission source (community vs. institutional referral), the patient’s primary clinical grouping, functional impairment level, and comorbidity status. A patient recovering from a hip replacement who was just discharged from a hospital will land in a different group, with a different threshold, than a patient managing a chronic wound at home.
Because the threshold is group-specific, there is no single number that applies across the board. Thresholds typically range from two to six visits, though the exact number for each of the 432 groups is published by CMS in supplemental data files released alongside each year’s Home Health Final Rule.
Why the Threshold Matters Financially
The gap between per-visit reimbursement and the full 30-day case-mix payment can be substantial. When an agency falls just one visit short of the threshold, it loses the lump-sum payment entirely and collects only the per-visit amount. This makes periods with visit counts hovering near the threshold, particularly those with five to seven visits, a known risk area. The Office of Inspector General has flagged improper payments on claims in that range, noting that some agencies billed just above the threshold when clinical documentation didn’t support the visits.
For the first visit in a LUPA period that is either the only period of care or the initial period in a sequence, Medicare applies a small add-on payment. This add-on uses a multiplier (1.67 for certain therapy disciplines as of recent rulemaking) to partially offset the higher cost of an initial assessment visit. It doesn’t close the gap with full case-mix payment, but it acknowledges that first visits require more time and resources.
The Shift From 60-Day to 30-Day Periods
Before PDGM took effect in January 2020, Medicare paid home health agencies in 60-day episodes. LUPA thresholds existed under that older system too, but the longer time frame gave agencies more room to accumulate visits. The move to 30-day periods effectively halved the billing window, meaning agencies now need to schedule and deliver the required visits in a tighter timeframe. A missed or canceled appointment carries more weight when you only have 30 days to meet the threshold instead of 60.
How Agencies Manage LUPA Risk
Falling below the LUPA threshold costs agencies revenue and can also signal gaps in patient care, since a patient grouped into a category that typically requires a certain number of visits may genuinely need them. Agencies manage this risk in several ways.
Accurate coding at admission is the first line of defense. If the patient’s clinical grouping, functional level, and comorbidities are coded correctly, the assigned payment group and its threshold will reflect the actual care the patient needs. Miscoding can place a patient in a group with a higher threshold than their care plan supports, creating a mismatch from the start.
Scheduling reliability matters just as much. A single no-show, a last-minute cancellation, or a clinician calling out sick can drop a period below threshold. Many agencies use automated scheduling tools that flag when a patient is approaching the end of a 30-day period with visits still outstanding. These alerts give coordinators time to reschedule before the window closes.
Care planning also plays a role. Building a visit schedule that front-loads necessary assessments and treatments early in the 30-day period creates a buffer. If disruptions happen in the final week, the threshold has already been met. That said, visits should always reflect clinical need. Adding visits solely to cross a payment threshold without clinical justification is a compliance risk that auditors specifically look for.
Where to Find Your Patient’s Threshold
CMS publishes the specific LUPA threshold for each of the 432 PDGM payment groups in supplemental data files that accompany the annual Home Health Prospective Payment System final rule. These files are available on the CMS Home Health Patient-Driven Groupings Model webpage and are updated each calendar year. Most electronic medical record and billing platforms used by home health agencies pull this data automatically, displaying the threshold for each patient’s assigned group so clinicians and schedulers can plan accordingly.