US · guidance
CMS Pub. 100-04, ch. 32, § 220.3
Medicare Summary Notice (MSN), Claim Adjustment Reason Code
(CARC), and Remittance Advice Remark Code (RARC)
(Rev. 1646, Issued: 12-09-08, Effective: 09-29-08, Implementation: 01-05-09)
The following messages are used by Medicare contractors when denying non-covered TIP
services:
• MSN: 21.11 “This service was not covered by Medicare at the time you received it.”
• CARC: 96 “Non-covered charge(s)”
N386 “This decision was based on a National Coverage Determination (NCD). An NCD
provides a coverage determination as to whether a particular item or service is covered. A
copy of this policy is available at http://www.cms.hhs.gov/med/search.asp. If you do not have
web access, you may contact the contractor to request a copy of the NCD.”
History
(Rev. 1646, Issued: 12-09-08, Effective: 09-29-08, Implementation: 01-05-09)
Provenance
- Source
- cms.gov
- Retrieved
- 2026-08-25
- Edition
- iom-2026-08-25
- Content hash
025fcefaf17eb2599538a6b05bfd4fe2f3a49c02262acab99763cc3307025530
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