Laboratory Question for the Week of November 30, 2015

Laboratory Compliance Question of the Week

Question:

When should the modifier L1 be used on codes for lab tests?

Answer:

Report modifier L1 to identify any clinically unrelated lab tests furnished on the same claim as hospital outpatient prospective payment system (OPPS) services but ordered by a different practitioner and for a different diagnosis than the other hospital outpatient service. 

Disclaimer: Every reasonable effort was made to ensure the accuracy of this information at the time it was published. However, due to the nature of industry changes over time we cannot guarantee its validity after the year it was published.