FY2027
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Excludes1 pair

C15- vs K22.7-

C15 and K22.7 are not coded together. ICD-10-CM declares them mutually exclusive with an Excludes1 note — the two conditions are not expected to occur together, so exactly one of them is normally correct for a given encounter. The Official Guidelines carve out one exception: if the two conditions are clearly unrelated to each other, both may be reported.

The official note, declared on K22.7
malignant neoplasm of esophagus (C15.-)
C15

Malignant neoplasm of esophagus

Not billable
Chapter 2
Neoplasms
Section
C15-C26
K22.7

Barrett's esophagus

Not billable
Chapter 11
Diseases of the digestive system
Section
K20-K31
Use when the record says
  • Barrett's disease
  • Barrett's syndrome
Indexed under
  • Metaplasia › esophagus

These two codes sit in different chapters of the Tabular List, which is usually the clearest signal that they describe different underlying processes rather than different degrees of the same one.

Excludes1 is not always absolute: where two conditions covered by the note are genuinely unrelated, CMS guidance permits reporting both. Document the reasoning rather than assuming it. More on Excludes1 vs Excludes2 · FY2027