What is medical service code 87661?

Medical service code 87661 refers to a specific laboratory test used for the detection of certain sexually transmitted infections, particularly Chlamydia trachomatis and Neisseria gonorrhoeae. This code is typically used for nucleic acid amplification tests (NAATs), which are highly sensitive and specific methods for identifying these pathogens in clinical specimens. It's important for healthcare providers to use the correct code for billing and documentation purposes.