C34.1 — Malignant neoplasm of upper lobe, bronchus or lung

Not billable

Is C34.1 billable?

No — C34.1 is a non-billable header code. C34.1 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 3 billable codes beneath C34.1.

Billable codes under this header

C34.1 at a glance

Code	C34.1
Description	Malignant neoplasm of upper lobe, bronchus or lung
Billable	No — header code
Code set	ICD-10-CM FY2027
Valid for encounters	October 1, 2026 – September 30, 2027

How is C34.1 listed in the Alphabetic Index?

These are the routes through the Alphabetic Index that lead to C34.1. They show the wording a clinician may have documented, which often differs from the Tabular description.

Pancoast's syndrome or tumor

Excludes1 — never code together — inherited from C30-C39

The conditions below can never be reported together with C34.1 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.

mesothelioma (C45.-)

Excludes1 — never code together — inherited from C34

The conditions below can never be reported together with C34.1 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.

Kaposi's sarcoma of lung (C46.5-)
malignant carcinoid tumor of the bronchus and lung (C7A.090)

Use additional code — inherited from C34

Report an additional code alongside C34.1 to fully describe the condition. C34.1 is sequenced first.

code to identify:
exposure to environmental tobacco smoke (Z77.22)
exposure to tobacco smoke in the perinatal period (P96.81)
history of tobacco dependence (Z87.891)
occupational exposure to environmental tobacco smoke (Z57.31)
tobacco dependence (F17.-)
tobacco use (Z72.0)

What codes fall under C34.1? (3)

How long has C34.1 existed?

C34.1 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.

Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.