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CPT Knowledgebase - Sep 21, 2010
If a single injection is performed for a thoracic intercostal nerve block, the effect of which is to block multiple intercostals nerves, is it appropriate to report CPT code 64421, Injection, anesthetic agent; intercostal nerves, multiple, regional block, or is the provider limited to reporting CPT code 64420, Injection, anesthetic agent; intercostal nerve, single?
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