AMA CPT Knowledge Base - Jul 31, 2007

The patient had an excision of hydrocele (CPT code 55040) performed. Three days later, the patient developed an abscess in the operative wound area. The patient was taken to the operating room for an incision and drainage of the right inguinal post-op wound (CPT code 10180). If this occurs within a global period, should CPT code 10180 be reported with modifier 78 or with modifier 79?

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