ICD-10-CM > Z00-Z99 > Z40-Z53 > Z53 > Z53.3 Z53.3 Procedure converted to open procedure Non-Billable/Non-Specific Codes Z53.31Laparoscopic surgical procedure converted to open procedureZ53.32Thoracoscopic surgical procedure converted to open procedureZ53.33Arthroscopic surgical procedure converted to open procedureZ53.39Other specified procedure converted to open procedure