Key legal question
Whether a definitive breast exoprosthesis is reimbursable after breast-conserving surgery without mastectomy.
Extracted holding
Yes. The regulatory term "after mastectomy" is too narrow; its proper meaning also covers breast-conserving tumor removal where there is a visible breast volume deficit.
Extracted reasoning
Textual reading is outweighed by historical, systematic, and teleological interpretation. The purpose of the rule is social integration and compensation of visible asymmetry; technological and surgical developments in breast cancer treatment require a contemporary application.