First 58662 is not a "diagnostic laparoscopy", the description is "Laparoscopy, surgical; with fulguration or excision of lesions of the ovary, pelvic viscera, or peritoneal surface by any method". If it was diagnostic only the notes for 58662 state that a diagnostic laparoscopy only the proper CPT is 49320. The diagnostic laparoscopy is included in the surgical laparoscopy billed with 58662. The allowance adjusted for the locality being Connecticut for 58662 is $761.34 and for 49320 it is $353.89, which obviously accounts for the significant increase in work that a surgical laparoscopy compared to the diagnostic laparoscopy.
What was her pre-op diagnosis, did they suspect she had endometriosis, if not what was the reason for the procedure? I would think that if the pre-op diagnosis was due to signs & symptoms that necessitated the diagnostic procedure.
What was her post-op diagnosis, particularly what was submitted to the insurance company on the claim for 58662? Did the procedure start out as diagnostic and become surgical due to the finding of endometriosis when they went in and examined the patient's anatomy?
What was her post-op diagnosis? Any follow visits related to endometriosis during the 90-day global period are likely included in the 58662 that the provider billed and reimbursed for. Unless of course there is more to the story that I don't know at this point...