There are no codes in the vulvar excision section for a cyst removal (other than Bartholin's) and this cyst was of the labia so that rules out the vaginal cyst excision code of 57135. The code I have settled on is 11423: Excision, benign lesion including margins...genitalia; excised diameter 2.1 to 3.0cm.
A ll modern mollusks have the same fundamental body plan. There are three distinct body zones: a head-foot, a visceral mass and a mantle. Some common features are 1  : Unsegmented soft body with bilateral symmetry.
Phylum Mollusca one of the largest phyla composed of many diverse organisms; all have a soft body; body structure composed of three parts; body symmetry: bilaterarl eg. octopus, snails, oysters Phylum Echindodermata means spiky skin; dwells at the bottom of the ocean floor; body symmetry: radial eg. starfishes, sea lilies, sea urchins