One of the fascinating things about Land Hermit Crabs is that they live in other creatures discarded shells. As they grow they will leave their old shell and find another larger one to move into. To assist the crabs with this, a few spare shells should be kept in the aquarium for such occasions.
The case involved multiple medical conditions and procedures is properly coded as Diagnosis Codes 366.16 (cataract) and 365.10 (glaucoma) and CPT Codes 66982-RT (right eye complex cataract surgery) and 66180-RT (right eye revision of an aqueous shunt/Aquaflo prosthesis).
2009 CPT codes of interest to Ophthalmology. 65091 - 68899 Eye Codes. 65091 - 65290 Eye Ball. 65091 - 65114 Removal Of Eye. 65091 Evisceration, ocular contents; w/o implant. 65093 Evisceration, ocular contents; w/ implant.