M1166 HCPCS Level II code: Pathology report for tissue specimens produced from wide local excisions or re-excisions
M1166 is the HCPCS code for “Pathology report for tissue specimens produced from wide local excisions or re-excisions” in CMS’s October 2026 release, in effect from Oct 1, 2026.
Official description
M1166Pathology report for tissue specimens produced from wide local excisions or re-excisions
Short description: Path rpt tis spec wle/reexc
HCPCS · United States
Medicare details
The indicators CMS publishes with M1166 in its October 2026 file. They describe Medicare’s handling, not another payer’s.
- Medicare coverage
- Carrier judgment
- Medicare pricing
- Service not separately priced by Part B (e.g., services not covered, bundled, used by Part A only, etc.)
- Type of service
- Medical care
- BETOS category
- Undefined codes
- Added
- Jan 1, 2023
Where M1166 sits
- 1M codesMedical services and quality measures
- 2Active code M1166Pathology report for tissue specimens produced from wide local excisions or re-excisions
Source and release
- Data release
- HCPCS Level II · October 2026
- Effective date
- Oct 1, 2026
- Publisher
- CMS
This page is built from the HCPCS Level II catalog that Vero Codes reads when it suggests codes: Centers for Medicare & Medicaid Services’s October 2026 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.
Frequently asked questions
What does HCPCS code M1166 mean?
M1166 is the HCPCS code for “Pathology report for tissue specimens produced from wide local excisions or re-excisions” in CMS’s HCPCS Level II October 2026 release.
Does Medicare cover M1166?
CMS lists M1166’s Medicare coverage as “Carrier judgment” and its pricing as “Service not separately priced by Part B (e.g., services not covered, bundled, used by Part A only, etc.)”. Coverage and payment still depend on the patient, the setting, the documentation and the payer.
Which HCPCS Level II release does this page use?
It uses CMS’s October 2026 release, in effect from Oct 1, 2026 to Dec 31, 2026. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.
Codes beside M1166
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