Consultaion in Observation

Hello,

Upon a review I came across a Cardiologist who submitted a claim with a 99214 with POS 11 for a consult that was requested by the Dr. who admitted the patient to Observation status. Which I know to be incorrect. However do not know the proper code to bill.

What code should the Cardiology report for his consult to a patient in observation status on same day of admit or on the subsequent day?

Please Help Me and provide CMS guidelines if possible.

Thank you

Consultaion in Observation