C34 vs C7A.090
C34 (Malignant neoplasm of bronchus and lung) compared with C7A.090 (Malignant carcinoid tumor of the bronchus and lung), 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. C34 carries an Excludes1 note covering C7A.090: “malignant carcinoid tumor of the bronchus and lung (C7A.090)”
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
| C34Malignant neoplasm of bronchus and lung | C7A.090Malignant carcinoid tumor of the bronchus and lung | |
|---|---|---|
| Billing status | Non-billable header | Billable |
| Classification | C00-D49 — Neoplasms (C00-D49) | C00-D49 — Neoplasms (C00-D49) |
| Definition | Malignant neoplasm of bronchus and lung is a non-billable ICD-10-CM category code (C34). | Malignant carcinoid tumor of the bronchus and lung is a billable ICD-10-CM diagnosis code (C7A.090). |
| Includes | malignant neoplasm of middle ear | — |
| Use additional code | code to identify: exposure to environmental tobacco smoke (Z77.22) exposure to tobacco smoke in the perinatal period (P96.81) | 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