ICD-10-CM
ICD-10 code for Lung cancer: C34.90
The closest CDC title for "Lung cancer" is C34.90, Malignant neoplasm of unspecified part of unspecified bronchus or lung. C34.90 is a billable code.
Source: CDC ICD-10-CM FY2027 order file dated June 16, 2026. Publisher page
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Codes under C34, then other CDC titles that name malignant neoplasm of unspecified part of unspecified bronchus or lung
A header groups codes and is not billed. A billable code is one you can report.
- C34Malignant neoplasm of bronchus and lungHeader
- C34.0Malignant neoplasm of main bronchusHeader
- C34.00Malignant neoplasm of unspecified main bronchusBillable
- C34.01Malignant neoplasm of right main bronchusBillable
- C34.02Malignant neoplasm of left main bronchusBillable
- C34.1Malignant neoplasm of upper lobe, bronchus or lungHeader
- C34.10Malignant neoplasm of upper lobe, unspecified bronchus or lungBillable
- C34.11Malignant neoplasm of upper lobe, right bronchus or lungBillable
- C34.12Malignant neoplasm of upper lobe, left bronchus or lungBillable
- C34.2Malignant neoplasm of middle lobe, bronchus or lungBillable
- C34.3Malignant neoplasm of lower lobe, bronchus or lungHeader
- C34.30Malignant neoplasm of lower lobe, unspecified bronchus or lungBillable
- C34.31Malignant neoplasm of lower lobe, right bronchus or lungBillable
- C34.32Malignant neoplasm of lower lobe, left bronchus or lungBillable
- C34.8Malignant neoplasm of overlapping sites of bronchus and lungHeader
- C34.80Malignant neoplasm of overlapping sites of unspecified bronchus and lungBillable
- C34.81Malignant neoplasm of overlapping sites of right bronchus and lungBillable
- C34.82Malignant neoplasm of overlapping sites of left bronchus and lungBillable
- C34.9Malignant neoplasm of unspecified part of bronchus or lungHeader
- C34.90Malignant neoplasm of unspecified part of unspecified bronchus or lungBillable
- C34.91Malignant neoplasm of unspecified part of right bronchus or lungBillable
- C34.92Malignant neoplasm of unspecified part of left bronchus or lungBillable
Use additional code
The CDC tabular list says to add the code named here after this one when it applies.
From C34. A note on a category applies to every code under it.
Excludes1
Excludes1 means these codes are not reported together.
From C34. A note on a category applies to every code under it.
Related pages
- C34.90 code detailsNotes, nearby codes, CMS-HCC group
- Category C34Every code under it
- Chapter 2Neoplasms
- ICD-10 codes by conditionA to Z
- Check a list of ICD-10 codes
- Denial code CO-11Diagnosis does not support the procedure
- Denial code CO-146Diagnosis invalid for the date of service
- HCPCS Level II code lookup
Questions
What is the ICD-10 code for Lung cancer?
The closest CDC title for "Lung cancer" is C34.90, Malignant neoplasm of unspecified part of unspecified bronchus or lung. C34.90 is a billable code.
Is C34.90 billable?
Yes. C34.90 is a billable code in the FY2027 ICD-10-CM file. Use a more specific code when the record documents one.
What documentation notes apply to C34.90?
The CDC tabular list gives 2 Excludes1 notes (not coded together), 7 "use additional code" notes for C34.90 and the categories above it. They are listed on this page.
What chapter is C34.90 in?
Chapter 2. Neoplasms.
When do ICD-10-CM codes change?
Every October 1, with the new fiscal year file. Some years add April 1 updates. This page uses the FY2027 file, effective October 1, 2026.