C4A vs C7A.095
C4A (Merkel cell carcinoma) compared with C7A.095 (Malignant carcinoid tumor of the midgut, unspecified), from the official CMS tabular data. Both may be reported when both conditions are documented (Excludes2).
Can these codes be reported together?
Yes, when both are documented. C7A.095 carries an Excludes2 note covering C4A: “Merkel cell carcinoma (C4A.-)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Side by side
| C4AMerkel cell carcinoma | C7A.095Malignant carcinoid tumor of the midgut, unspecified | |
|---|---|---|
| Billing status | Non-billable header | Billable |
| Classification | C00-D49 — Neoplasms (C00-D49) | C00-D49 — Neoplasms (C00-D49) |
| Definition | Merkel cell carcinoma is a non-billable ICD-10-CM category code (C4A). | Malignant carcinoid tumor of the midgut, unspecified is a billable ICD-10-CM diagnosis code (C7A.095). |
| Use additional code | — | code to identify any associated endocrine syndrome, such as: carcinoid syndrome (E34.00) |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources