M1438 Lst knwn well <=210 minutes
Also known as: last known well <210 minutes, acute stroke window, lst knwn well <=210 min
Performance measure documenting last known well status with survival less than or equal to 210 minutes in acute stroke patients. Captures severe acute presentations.
In Plain Language
Stroke patient with narrow treatment window; Recent onset stroke potential thrombolytic candidate
Clinical Context
Documents acute ischemic stroke patients where last known well time was within 210 minutes, potentially eligible for thrombolytic or thrombectomy intervention.
RVU Information
CPT M1438 does not have a physician work RVU assigned by CMS. Reimbursement for this code is determined by payer-specific fee schedules.
Billing & Documentation
M-codes cover quality measures and performance reporting. They are used in value-based care programs to track whether specific clinical actions were taken. Documentation must support that the measured action was performed or a valid exclusion applies.
Specialties
Frequently Asked Questions
What is CPT code M1438?
CPT M1438 (Lst knwn well <=210 minutes) is a M Codes code. Performance measure documenting last known well status with survival less than or equal to 210 minutes in acute stroke patients. Captures severe acute presentations.
Is M1438 covered by insurance?
M1438 is a temporary HCPCS code. Coverage varies by payer and may change when permanent codes are assigned. Documents acute ischemic stroke patients where last known well time was within 210 minutes, potentially eligible for thrombolytic or thrombectomy intervention.
When is CPT M1438 used?
Documents acute ischemic stroke patients where last known well time was within 210 minutes, potentially eligible for thrombolytic or thrombectomy intervention.
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CPT® is a registered trademark of the American Medical Association. Data sourced from CMS Physician Fee Schedule RVU26A. Descriptions, synonyms, and clinical context are original content by RVU Edge.