Medicare Secondary Payer Manual (Pub. 100-05), Ch. 5 § 50.2
Medicare Secondary Payer (MSP) Payment Modules (MSPPAY)
50.2 - Medicare Secondary Payer (MSP) Payment Modules (MSPPAY)
for Part A MACs
(Rev. 11550; Issued: 08-12-22; Effective: 10-13-22; Implementation:10-13-22)
A. Introduction
The Part A MSPPAY modules are standardized software A/B MACs (Part A) must
use to calculate MSP bill payment. This ensures consistent MSP payment calculations.
The calculations performed by these modules are in accordance with regulations
42 CFR 411.33. (See Chapter 1, §10.8 and this chapter, §30.3.1, and §30.5. Updates to
these modules including technical documentation are furnished by CMS, as required.