Which modifier is used when an E/M service is provided by a locum tenens physician?

The modifier used when an E/M service is provided by a locum tenens physician is -Q6. This modifier indicates that a physician or other qualified healthcare professional is providing temporary services on behalf of another provider who is unavailable. The use of the -Q6 modifier allows for the correct billing and reimbursement for services rendered by a locum tenens physician, ensuring that the primary provider can still be compensated while they are absent.

For instance, if a regular physician is temporarily away from their practice, a locum tenens may step in to ensure continuity of patient care. When billing for the services provided by the locum tenens physician, it is important to apply the -Q6 modifier to denote that these services were temporarily rendered by someone other than the primary physician. This clarity helps insurance companies process the claims appropriately.

The other modifiers listed serve different purposes and do not specifically relate to locum tenens arrangements. For example, modifier -25 indicates a significant, separately identifiable E/M service on the same day as a procedure, while -GC and -GE are used in different contexts related to teaching physicians and resident supervision. Understanding the distinction among these modifiers is crucial for accurate coding and billing in various clinical scenarios.