M1339 – Patients 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
HCPCS Level II code · M codes: Medical Services and Quality Measures
HCPCS codeM1339
- Long description
- Patients 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
- Short description
- Pts f/u 30-180 dys + improv
- 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, 2024
- Last change
- January 1, 2024 – No change
Frequently asked questions
What is HCPCS code M1339?
M1339 is a HCPCS Level II code for patients 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.
Does Medicare cover M1339?
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
- M1331 – Patients who were appropriately evaluated during the initial exam and were re-evaluated no later than 8 weeks from initial exam
- M1332 – Patients who were not appropriately evaluated during the initial exam and/or who were not re-evaluated within 2 weeks
- M1333 – Acute vitreous hemorrhage
- M1334 – Patients with a post-operative encounter of the eye with the acute pvd within 2 weeks before the initial encounter or 2 weeks after initial acute pvd encounter
- M1335 – Documentation of patient reason(s) for not having a follow up exam (e.g., inadequate time for follow up)
- M1336 – Patients who were appropriately evaluated during the initial exam and were re-evaluated no later than 2 weeks
- M1337 – Acute pvd
- M1338 – Patients 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
- M1340 – Index assessment completed using the 12-item whodas 2.0 or sds during the denominator identification period
- M1341 – Patients 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
- M1342 – Patients who died during the performance period
- M1343 – Patients 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
- M1344 – Patients who did not have a baseline pam score and/or a second score within 4 to 12 months of baseline pam score
- M1345 – Patients who had a baseline pam score and a second score within 4 to 12 month of baseline pam score
- M1346 – Patients who did not have a net increase in pam score of at least 6 points within a 4 to 12 month period
- M1347 – Patients who achieved a net increase in pam score of at least 3 points in a 4 to 12 month period (passing)
Source: CMS HCPCS Level II quarterly file, October 2026. Reference only – check payer policy before billing.