G8601 – Iv thrombolytic therapy not initiated within 4.5 hours (<= 270 minutes) of time last known well for reasons documented by clinician (e.g. patient enrolled in clinical trial for stroke, patient admitted for elective carotid intervention)

HCPCS Level II code · G codes: Procedures / Professional Services (Temporary)

Active code Carrier judgment

HCPCS codeG8601
Long description
Iv thrombolytic therapy not initiated within 4.5 hours (<= 270 minutes) of time last known well for reasons documented by clinician (e.g. patient enrolled in clinical trial for stroke, patient admitted for elective carotid intervention)
Short description
No elig tpa init w/in 4.5 hr
Pricing indicator
00 Not separately priced by Part B (bundled, not covered or Part A only)
Medicare coverage
C Carrier judgment – coverage decided by the Medicare contractor
BETOS category
M5D Specialist - other
Added
January 1, 2010
Last change
January 1, 2024 – No change

Frequently asked questions

What is HCPCS code G8601?

G8601 is a HCPCS Level II code for iv thrombolytic therapy not initiated within 4.5 hours (<= 270 minutes) of time last known well for reasons documented by clinician (e.g. patient enrolled in clinical trial for stroke, patient admitted for elective carotid intervention).

Does Medicare cover G8601?

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 G codes

Source: CMS HCPCS Level II quarterly file, October 2026. Reference only – check payer policy before billing.