1. Procedure and CPTCode Selection:
The procedure performed was a hysteroscopy to examine the uterine cavity due to abnormal vaginal bleeding.
This is a diagnostic hysteroscopy.
CPTCode 58555 is specifically for a diagnostic hysteroscopy to examine the uterine cavity, which aligns with the procedure performed in this case.
2. Rationale for Excluding Other Options:
Code 58558 is for a hysteroscopy with a surgical procedure, such as biopsy or removal of a lesion or polyp, which was not performed in this case.
Code 58579 is an unlisted procedure code for the female genital system and is unnecessary here because there is a specific code (58555) for diagnostic hysteroscopy.
Code 58578 is also an unlisted hysteroscopic procedure code and is not appropriate when a specific diagnostic code exists.
3. AAPC and CPTCoding Guidelines:
AAPC guidelines indicate that 58555 should be used for diagnostic hysteroscopy procedures without any surgical intervention.
Therefore, the correct answer, following CPTguidelines, is C. 58555.