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Billing of Tissue Plasminogen Activators by Mobile Stroke Units

Last updated on 5/21/2020

Effective immediately, hospitals can have claims designated as administered by Mobile Stroke Units (MSUs) for administration of tissue plasminogen activator (tPA).

Hospitals affiliated with MSUs remain as the billing provider and may choose to instruct their billing and coding personnel to use the modifier for MSU administrations of tPA. When using Healthcare Common Procedure Coding System (HCPCS) Code J2997, hospitals must use modifier U4 to indicate that the mobile stroke unit administered the tPA. For more information, contact the TMHP Contact Center at 800-925-9126.