M1346 — Patients who did not have a net increase in pam score of at least 6 points within a 4 to 12 month period
M1346 is a HCPCS Level II code for patients who did not have a net increase in pam score of at least 6 points within a 4 to 12 month 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 M1346
- Long descriptor
- Patients who did not have a net increase in pam score of at least 6 points within a 4 to 12 month period
- Short descriptor
- No pam inc 6 pts 4-12 mo
- Added
- January 1, 2024
- 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 M1346
HCPCS has no hierarchy — related items simply sit next to each other in the numbering. If M1346 is not quite right, the correct code is very often within a few positions of it.
- M1338Patients who had follow-up assessment 30 to 180 days after the index assessment who did not demonstrate positive improvement or maintenance of functioning scores during the performance period
- M1339Patients who had follow-up assessment 30 to 180 days after the index assessment who demonstrated positive improvement or maintenance of functioning scores during the performance period
- M1340Index assessment completed using the 12-item whodas 2.0 or sds during the denominator identification period
- M1341Patients who did not have a follow-up assessment or did not have an assessment within 30 to 180 days after the index assessment during the performance period
- M1342Patients who died during the performance period
- M1343Patients who are at pam level 4 at baseline or patients who are flagged with extreme straight line response sets on the pam or with excessive missing responses
- M1344Patients who did not have a baseline pam score and/or a second score within 4 to 12 months of baseline pam score
- M1345Patients who had a baseline pam score and a second score within 4 to 12 month of baseline pam score
- M1347Patients who achieved a net increase in pam score of at least 3 points in a 4 to 12 month period (passing)
- M1348Patients who achieved a net increase in pam score of at least 6-points in a 4 to 12 month period (excellent)
- M1349Patients who did not have a net increase in pam score of at least 3 points within a 4 to 12 month period
- M1350Patients who had a completed suicide safety plan initiated, reviewed or updated in collaboration with their clinician (concurrent or within 24 hours) of the index clinical encounter
- M1351Patients who had a suicide safety plan initiated, reviewed, or updated and reviewed and updated in collaboration with the patient and their clinician concurrent or within 24 hours of clinical encounter and within 120 days after initiation
- M1352Suicidal ideation and/or behavior symptoms based on the c-ssrs or equivalent assessment
- M1353Patients who did not have a completed suicide safety plan initiated, reviewed or updated in collaboration with their clinician (concurrent or within 24 hours) of the index clinical encounter
- M1354Patients who did not have a suicide safety plan initiated, reviewed, or updated or reviewed and updated in collaboration with the patient and their clinician concurrent or within 24 hours of clinical encounter and within 120 days after initiation
Questions about M1346
What is HCPCS code M1346?
M1346 is a HCPCS Level II code for patients who did not have a net increase in pam score of at least 6 points within a 4 to 12 month period. It sits in the Medical Services section.
Does Medicare cover M1346?
The CMS HCPCS file marks M1346 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 M1346 paid under the physician fee schedule?
M1346 carries PFS status code M. Measurement code. Used for reporting purposes only; never paid.