Billing for time

Doctors report is marked at:
Couns/coord>50% is checked,
Couns/coord mins 15,
Total visit time min 30.
This is a follow up visit.

You had mentioned there was a difference in billing for time or regular E/M visit.
I have code 99213 with 1 unit. Is this the correct way to bill for time?
Thank you,

re: Billing for time

25 to 39 min is a 99214! I would tell the doc to list total time and ">50% counseling" and not time counseling- as you can see in your example, counseling time is = 50% not >50%. It is a few second difference but some auditor could nail you on it.