If a procedure code has the term 'unilateral' in the descriptor, AND there is no

If a procedure code has the term 'unilateral' in the descriptor, AND there is no corresponding code with 'bilateral' in the descriptor, would it be appropriate to append modifier 50 to the code when performed bilaterally. Example, CPT code 31591, Laryngoplasty, medialization, unilateral. If performed bilaterally, would modifier 50 be appropriate to append?

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CPT Knowledgebase - Nov 1, 2021