ICD-10-CM > C00-D49 > C15-C26 > C15 C15 Malignant neoplasm of esophagus Non-Billable/Non-Specific Use Additional code to identify:alcohol abuse and dependence (F10.-) Codes C15.3Malignant neoplasm of upper third of esophagusC15.4Malignant neoplasm of middle third of esophagusC15.5Malignant neoplasm of lower third of esophagusC15.8Malignant neoplasm of overlapping sites of esophagusC15.9Malignant neoplasm of esophagus, unspecified