Long-Term Care Hospital Prospective Payment System (LTCH PPS)¶

The Long-Term Care Hospital Prospective Payment System (LTCH PPS) is the methodology used by Medicare to pay for inpatient stays in long-term care hospitals. These facilities generally treat patients with medically complex conditions requiring long hospital stays. Our application implements the official CMS logic to simulate these payments accurately.

Methodology Overview¶

Under LTCH PPS, each case is categorized into a Medicare Severity Long-Term Care Diagnosis Related Group (MS-LTC-DRG). The classification system is the same as the IPPS MS-DRGs, but the relative weights are specific to the LTCH population.

Payment Calculation¶

The standard payment is determined by multiplying the MS-LTC-DRG relative weight by a standard federal rate. This rate is adjusted for: - Geographic Factors: Area wage adjustments (labor-related share). - Case-Mix: The complexity of the cases treated. - Policy Adjustments: Cost-of-living adjustments (COLA) for Alaska and Hawaii.

Dual Payment Rate Structure¶

LTCH PPS utilizes a dual rate structure: 1. Standard Federal Payment Rate: For cases that meet specific clinical criteria (e.g., ICU stay > 3 days or ventilator use > 96 hours in an immediately preceding IPPS stay). 2. Site Neutral Payment Rate: For cases that do not meet the criteria, paid at the lower of the IPPS comparable per diem amount or 100% of the estimated cost of the case.

Key Components¶

MS-LTC-DRGs¶

While using the same structure as MS-DRGs, MS-LTC-DRGs have their own relative weights reflecting the higher resource usage in LTCH settings. - CMS MS-LTC-DRG Information

Short-Stay Outliers (SSO)¶

An adjustment is made for cases with a length of stay much shorter than the geometric mean length of stay for the assigned MS-LTC-DRG. - Payment: Based on the least of several calculation methods (e.g., standard federal rate, cost of case, per diem amount).

High-Cost Outliers¶

To protect hospitals from large financial losses due to extraordinarily expensive cases, outlier payments are provided. - Threshold: Costs must exceed the MS-LTC-DRG payment plus a fixed-loss threshold. - Calculation: Payment is 80% of the costs above the threshold.

Interrupted Stay Policy¶

If a patient is discharged and readmitted to the same LTCH within a fixed number of days (usually 3), it is treated as a single case with one payment.

Implementation Details¶

Our LTCH processing engine is a custom implementation based on the CMS Web Pricer software and official PC Pricer logic.

CMS Web Pricer¶

We integrate the logic from the official CMS source code to ensure high fidelity with Medicare payment rules. - Source: CMS Pricer Source Code - Updates: Updated annually to match the outcome of the Federal Fiscal Year (October 1).

Data Sources¶

The processor utilizes the following CMS data files: - Provider Specific File (PSF): Hospital-specific rates, wage indexes, and cost-to-charge ratios. - MS-LTC-DRG Table: Relative weights and geometric mean length of stay. - Pricer Configuration: Annual standardized amounts and thresholds.

Using the LTCH Module¶

1. Select Module: Ensure "LTCH" is checked in the Module Selector.
2. Enter Diagnosis: Accurate Principal and Secondary diagnoses are critical for correct MS-LTC-DRG assignment.
3. Enter Procedures: Surgical procedures significantly impact grouping.
4. Prior Stay Information: For accurate site-neutral vs. standard rate determination, information about the immediately preceding IPPS stay (ICU days, Vent hours) may be required.
5. Review Results: The output will detail the assigned MS-LTC-DRG, the payment rate applied (Standard vs. Site Neutral), outlier amounts, and total reimbursement.