Multi-Specialty ICD-10 NCD Coding Revisions: Update Systems Before January 4
CMS Transmittal R13923OTN (CR 14570) implements ICD-10 and NCD coding revisions effective January 4, 2027 — system updates required.
Action required by
January 4, 2027
Review the Action Required section below and ensure your team has completed all compliance steps before this date.
CMS Transmittal R13923OTN, issued under Change Request (CR) 14570 and Publication 100-20, implements ICD-10 and other coding revisions to National Coverage Determinations (NCDs) with an implementation date of January 4, 2027. This is a Transmittal affecting multi-specialty billing across Medicare claims processing systems. The single most critical compliance implication is that any encoder, grouper, or claims scrubber referencing NCD-linked ICD-10 codes must be updated before the January 4, 2027 go-live date to avoid claim rejections or incorrect coverage determinations.
Regulatory Background
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Quick answers
Does CR 14570 affect both Part A and Part B claims, or only one claim type?
Transmittal R13923OTN revises ICD-10 code mappings within NCDs, which govern coverage determinations across Medicare. Depending on which NCDs are revised, both 837I (Part A institutional) and 837P (Part B professional) claim types may be affected. Review the full CR 14570 document to identify the specific NCDs revised and confirm which claim types each NCD applies to in your billing environment.
This transmittal is labeled 'part 2 of 2' — do I need to act on both parts separately?
Yes. The January 2027 NCD coding revision cycle is split across two transmittals, and NCD code list changes may be distributed between them. You must obtain and review both part 1 and part 2 to have a complete picture of all ICD-10 additions, deletions, and modifications taking effect January 4, 2027 under CR 14570 and Publication 100-20.
Content summarized from publicly available federal publications including CMS, MAC contractors, and the Federal Register. CLV Intelligence is not affiliated with or endorsed by any government agency. This is not legal or medical advice.