Final answer:
In the case of a colposcopy with endometrial biopsy, two separate codes would be used, and modifier -59 could be appended to indicate that the procedures were distinct, according to the 2013 CPT revisions.
Step-by-step explanation:
When a patient undergoes a colposcopy with an endometrial biopsy, these procedures are generally coded separately, reflecting the distinct services provided. As per the 2013 Current Procedural Terminology (CPT) code revisions, if these procedures are performed together but are not described by a combination code, two codes should be used. In certain scenarios, modifier -59 may be appended to indicate that the procedures are distinct and separate when they are not normally reported together. It’s important to note that the detailed information within each code descriptor should be closely followed to ensure proper coding practices. While endometrial biopsies can be part of the diagnostic process for conditions such as endometriosis, colposcopy is a separate procedure aimed explicitly at examining the cervix after an abnormal Pap smear. They each play a role in diagnosing different aspects of gynecological health.