If there is nothing after the semicolon, it means that whatever came before the semicolon is the full description for that code.
For example, the full descriptions for these codes are:
56630 Vulvectomy, radical, partial;
56631 Vulvectomy, radical, partial; with unilateral inguinofemoral lymphadenectomy
56632 Vulvectomy, radical, partial; with bilateral inguinofemoral lymphadenectomy
So if the unilateral inguinofemoral lymphadenectomy was also done, code 56631. If the bilateral inguinofemoral lymphadenectomy was also done, code 56632. If neither were done, just the partial radical vulvectomycode, code 56630.
Hope this clears it up for you.