C15.5 vs C16.0
C15.5 (Malignant neoplasm of lower third of esophagus) compared with C16.0 (Malignant neoplasm of cardia), from the official CMS tabular data. Do not report these codes together: the official tabular list marks them Excludes1.
Can these codes be reported together?
No — do not report together. C15.5 carries an Excludes1 note covering C16.0: “malignant neoplasm of cardio-esophageal junction (C16.0)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
Side by side
| C15.5Malignant neoplasm of lower third of esophagus | C16.0Malignant neoplasm of cardia | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | C00-D49 — Neoplasms (C00-D49) | C00-D49 — Neoplasms (C00-D49) |
| Definition | Malignant neoplasm of lower third of esophagus is a billable ICD-10-CM diagnosis code (C15.5). | Malignant neoplasm of cardia is a billable ICD-10-CM diagnosis code (C16.0). |
| Includes | — | Malignant neoplasm of cardiac orifice Malignant neoplasm of cardio-esophageal junction Malignant neoplasm of esophagus and stomach Malignant neoplasm of gastro-esophageal junction |
| Use additional code | code to identify: alcohol abuse and dependence (F10.-) | code to identify: alcohol abuse and dependence (F10.-) |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources