let us place it this way:
58661: Lap, surgical; with removal of ADNEXAL STRUCTURES( partial or total oopherectomy AND or salpingectomy - meaning all structures belonging to adnexa removal ,or partial, or some total and/or some of them partial. Right?
58662: Lap,surgical: with fulguration or excision of lesions of ovary(which is not removal of ovary but any other things- can be cystectomy, wedge resection, ovariotomy or simply fulguration etc), pelvic viscera or peritoneal surface by any method.
One session, same lap procedure and same surgeon same anatomical structure/ or other anatomical structures also included!! Also depends on the involvement of the structures and procedures!
Pelvic viscera: those organs other than adnexal organs(ie ovaries and tubes, peri and para tubal ducts, structures and ligaments and surrounding structures),
Say for example, Appendix, bladder ureter, uterus or pelvic digestive tracts/organs lymph nodes and system not in adenexa, are not included in adnexal removal.
Now let us figure it out: some of the descriptional elements in 58662 like fulguration excision of lesions ovary can be included with the 58661 procedures with modifiers rather than separately reporting them as 58662 what ever suitable-as -22 or 59. Because the intended surgery was 58661 and intraoperatively they had to increase/extent the procedure on to fulgration or excision of adnexal contents even other pelvic or pelvic peritoneal lesion fulgration /excision as for my openion
If the surgeon goes on with fulguration and excision of LESIONS of OTHER ORGANS cited in 58662, can also be appended all the more with-59 on to 58661
Whether can be taken as separate procedure because those anatomical structures
are not included in 58661 procedure is still may not be accepted by the payers if the physician's document do explain.; may accept for appending 59
The bottom line of my discusssion is this:
58661 can accept and include some or partial procedures in the 58662 but not the 58662 can fold/contain all that in 58661
you could try to append 22 or 59 on to 58661 with a document/report from Physician explaining the whole lot of procedures done.
This only for discussion ! Give a trial !!