M1413 – Patients who had a positive pd-l1 biomarker expression test result prior to the initiation of first-line immune checkpoint inhibitor therapy
HCPCS Level II code · M codes: Medical Services and Quality Measures
HCPCS codeM1413
- Long description
- Patients who had a positive pd-l1 biomarker expression test result prior to the initiation of first-line immune checkpoint inhibitor therapy
- Short description
- Pos pdl1 bef init ici tx
- Pricing indicator
00Not separately priced by Part B (bundled, not covered or Part A only)- Medicare coverage
CCarrier judgment – coverage decided by the Medicare contractor- BETOS category
Z2Undefined codes- Added
- January 1, 2025
- Last change
- January 1, 2025 – No change
Frequently asked questions
What is HCPCS code M1413?
M1413 is a HCPCS Level II code for patients who had a positive pd-l1 biomarker expression test result prior to the initiation of first-line immune checkpoint inhibitor therapy.
Does Medicare cover M1413?
The HCPCS file lists coverage code C: Carrier judgment – coverage decided by the Medicare contractor. Coverage and payment also depend on local coverage determinations and the patient’s plan.
Nearby M codes
- M1405 – Patients with recurrence/disease progression
- M1406 – Patients who leave the practice during the follow-up period
- M1407 – Patients who died during the follow-up period
- M1408 – Patients who have germline brca testing completed before diagnosis of epithelial ovarian, fallopian tube, or primary peritoneal cancer
- M1409 – Patients who received germline testing for brca1 and brca2 or genetic counseling completed within 6 months of diagnosis
- M1410 – Patients who did not have germline testing for brca1 and brca2 or genetic counseling completed within 6 months of diagnosis
- M1411 – Currently on first-line immune checkpoint inhibitors without chemotherapy
- M1412 – Patients with metastatic nsclc with epidermal growth factor receptor (egfr) mutations, alk genomic tumor aberrations, or other targetable genomic abnormalities with approved first-line targeted therapy, such as nsclc with ros1 rearrangement, braf v600e mutation, ntrk 1/2/3 gene fusion, met ex14 skipping mutation, and ret rearrangement
- M1414 – Documentation of medical reason(s) for not performing the pd-l1 biomarker expression test prior to initiation of first-line immune checkpoint inhibitor therapy (e.g., patient is in an urgent or emergent situation where delay of treatment would jeopardize the patient's health status; other medical reasons/contraindication)
- M1415 – Patients who did not have a positive pd-l1 biomarker expression test result prior to the initiation of first-line immune checkpoint inhibitor therapy
- M1416 – Patient received hospice services any time during the performance period
- M1417 – Patients who are up to date on their covid-19 vaccinations as defined by cdc recommendations on current vaccination
- M1418 – Patients who are not up to date on their covid-19 vaccinations as defined by cdc recommendations on current vaccination because of a medical contraindication documented by clinician
- M1419 – Patients who are not up to date on their covid-19 vaccinations as defined by cdc recommendations on current vaccination
- M1420 – Complete ophthalmologic care mips value pathway
- M1421 – Dermatological care mips value pathway
Source: CMS HCPCS Level II quarterly file, October 2026. Reference only – check payer policy before billing.