M1401 — Stages i-iii breast cancer
M1401 is a HCPCS Level II code for stages i-iii breast cancer. It belongs to the Medical Services section. Whether Medicare pays it depends on the coverage rule below.
Medicare coverage: Carrier judgment
Coverage is decided by your Medicare contractor, not by national policy. Whether this is paid depends on the LCD for your jurisdiction and on what the documentation supports.
From the coverage field of the CMS Alpha-Numeric HCPCS File, release 2026Q3-Jul. This states Medicare’s position on the code, not on your particular claim.
Physician fee schedule statusM
Measurement code. Used for reporting purposes only; never paid.
Global period: XXX
Want the dollar amount for your locality? The fee calculator applies your GPCI and the current conversion factor.
The CMS record for M1401
- Long descriptor
- Stages i-iii breast cancer
- Short descriptor
- Stg i-iii br ca
- Added
- January 1, 2025
- BETOS
- Z2
- Pricing indicator
- 00 — Not priced by Part B
The official wording. This is what the code means.
CMS's 28-character form, which is what shows up on a remittance advice.
When CMS introduced the code.
Berenson-Eggers Type of Service — CMS's own analytic grouping.
Service not separately priced by Part B — not covered, bundled into another service, or used by Part A only.
Codes adjacent to M1401
HCPCS has no hierarchy — related items simply sit next to each other in the numbering. If M1401 is not quite right, the correct code is very often within a few positions of it.
- M1393Patients who were not diagnosed with recurrent melanoma during the current performance period
- M1394Stages i-iii breast cancer
- M1395Patients receiving an initial chemotherapy regimen with a defined duration with the eligible clinician or group
- M1396Patients on a therapeutic clinical trial
- M1397Patients with recurrence/disease progression
- M1398Patients with baseline and follow-up promis surveys documented in the medical record
- M1399Patients who leave the practice during the follow-up period
- M1400Patients who died during the follow-up period
- M1402Patients receiving an initial chemotherapy regimen with a defined duration with the eligible clinician or group
- M1403Patients with baseline and follow-up promis surveys documented in the medical record
- M1404Patients on a therapeutic clinical trial
- M1405Patients with recurrence/disease progression
- M1406Patients who leave the practice during the follow-up period
- M1407Patients who died during the follow-up period
- M1408Patients who have germline brca testing completed before diagnosis of epithelial ovarian, fallopian tube, or primary peritoneal cancer
- M1409Patients who received germline testing for brca1 and brca2 or genetic counseling completed within 6 months of diagnosis
Questions about M1401
What is HCPCS code M1401?
M1401 is a HCPCS Level II code for stages i-iii breast cancer. It sits in the Medical Services section.
Does Medicare cover M1401?
The CMS HCPCS file marks M1401 as "Carrier judgment". Coverage is decided by your Medicare contractor, not by national policy. Whether this is paid depends on the LCD for your jurisdiction and on what the documentation supports.
How is M1401 paid under the physician fee schedule?
M1401 carries PFS status code M. Measurement code. Used for reporting purposes only; never paid.