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Submitting a provider enrollment appeal: Corrective action plan or reconsideration request

February 27, 2026
Learn how to submit a provider enrollment appeal in the form of a corrective action plan or reconsideration request.

Tools & forms: Claims

February 27, 2026
Use these self-service tools and forms related to claims.

Ending AX modifier requirements for acute kidney injury (AKI) and end stage renal disease (ESRD)

February 27, 2026
Effective July 1, 2026, new billing instructions apply related to no longer submitting the AX modifier and hemodiafiltration and AKI claims.

Treatment of Medicare Part C days in the calculation of a hospital's Medicare disproportionate patient percentage

February 25, 2026
Read this article for guidance for the treatment of Medicare Part C days in the calculation of a provider's Medicare disproportionate share hospital adjustment.

Disproportionate share hospital (DSH) adjustment

March 2, 2026
This briefly identifies the two methods used to determine the disproportionate share as well as the supplementary security income updates.

Modifiers

February 26, 2026
View details regarding specific modifiers including tips, decision flowcharts, and educational information.

Tips to prevent claim adjustment reason code (CARC) PR 170

February 26, 2026
This denial is received when services furnished or ordered by a chiropractor are not related to treatment by means of manual manipulation of the spine to correct a subluxation and/or the claim submitted does not meet the requirements. Read…

News regarding wage index and occupational mix

March 2, 2026
Read this important update regarding upcoming wage indexes and occupational mix survey data.

Pre-market approval (PMA), PMA post-approval studies, pre-market notification (PMN) 510(k), and 510(k) post-approval extension studies

March 2, 2026
Read about pre-market approval (PMA), PMA post-approval studies, pre-market notification (PMN) 510(k), and 510(k) post-approval extension studies guidelines related only to percutaneous transluminal angioplasty (PTA) with carotid artery ste…

MLN Matters articles: First quarter 2026

March 2, 2026
View the most recent articles released by CMS in January and February.
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