Wiki Routine labs and clinical trials

[NikkiBrownell]

So we have a patient in our ob/gyn practice that is having her INR and PTT labs drawn at our office due to a clinical trial she is participating in. We are having a hard time getting reimbursement from the insurance company and she does have benefits for the these services. We are only listing Dx code C79.9. Should be also be listing a Z code? If so, what Z code is appropriate for just the labs? We were looking at Z00.6, but that is for an exam.

Any help is appreciated.

Thanks.

 

[CoderRuDe]

We use the same Z00.6 for the secondary diagnosis code, but also append modifier Q1 to the CPT codes for services not covered by the sponsor, but reimbursable by insurance. I know this is late, but hope it's helpful.