18 Operations On External Ear 
18.0 Incision Of External Ear 
18.01 Piercing of ear lobe convert 18.01 to ICD-10-PCS 18.02 Incision of external auditory canal convert 18.02 to ICD-10-PCS
18.09 Other incision of external ear convert 18.09 to ICD-10-PCS 18.1 Diagnostic Procedures On External Ear 18.11 Otoscopy convert 18.11 to ICD-10-PCS 18.12 Biopsy of external ear convert 18.12 to ICD-10-PCS 18.19 Other diagnostic procedures on external ear convert 18.19 to ICD-10-PCS 18.2 Excision Or Destruction Of Lesion Of External Ear 18.21 Excision of preauricular sinus convert 18.21 to ICD-10-PCS 18.29 Excision or destruction of other lesion of external ear convert 18.29 to ICD-10-PCS 18.3 Other Excision Of External Ear 18.31 Radical excision of lesion of external ear convert 18.31 to ICD-10-PCS 18.39 Other excision of external ear convert 18.39 to ICD-10-PCS 18.4 Suture of laceration of external ear convert 18.4 to ICD-10-PCS 18.5 Surgical correction of prominent ear convert 18.5 to ICD-10-PCS 18.6 Reconstruction of external auditory canal convert 18.6 to ICD-10-PCS 18.7 Other Plastic Repair Of External Ear 18.71 Construction of auricle of ear convert 18.71 to ICD-10-PCS 18.72 Reattachment of amputated ear convert 18.72 to ICD-10-PCS 18.79 Other plastic repair of external ear convert 18.79 to ICD-10-PCS 18.9 Other operations on external ear convert 18.9 to ICD-10-PCS