M1400 — Patients who died during the follow-up period
M1400 is a HCPCS Level II code for patients who died during the follow-up period. 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
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The CMS record for M1400
- Long descriptor
- Patients who died during the follow-up period
- Short descriptor
- Pt died dur perf pd
- 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 M1400
HCPCS has no hierarchy — related items simply sit next to each other in the numbering. If M1400 is not quite right, the correct code is very often within a few positions of it.
- M1392Documentation of patient reasons for no examination, i.e., refusal of examination or lost to follow-up (documentation must include information that the clinician was unable to reach the patient by phone, mail or secure electronic mail - at least one method must be documented)
- 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
- M1401Stages i-iii breast cancer
- 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
Questions about M1400
What is HCPCS code M1400?
M1400 is a HCPCS Level II code for patients who died during the follow-up period. It sits in the Medical Services section.
Does Medicare cover M1400?
The CMS HCPCS file marks M1400 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 M1400 paid under the physician fee schedule?
M1400 carries PFS status code M. Measurement code. Used for reporting purposes only; never paid.