Final answer:
Temporary HCPCS Level II C codes are required by OPPS hospitals for billing specific outpatient services when no permanent codes are available, and these are frequently updated.
Step-by-step explanation:
The question concerns the use of temporary HCPCS Level II codes by hospitals that operate under the Outpatient Prospective Payment System (OPPS). These temporary codes, known as 'C' codes, are unique to the OPPS and are required for billing certain hospital outpatient services and procedures. C codes are used to identify drugs, biologicals, and medical equipment or services when no permanent HCPCS codes are available. For example, C1783 is a temporary HCPCS code for an osteogenesis stimulator. It's crucial for hospitals to stay updated on these temporary codes as they are frequently updated, and new codes are implemented as technology and services evolve.