ICD-10 codes for Lung Cancer
Lung Cancer is coded primarily under C34, C34.90, C34.91 in the ICD-10-CM (Clinical Modification) classification. Top-level categories include C34 (Malignant neoplasm of bronchus and lung). The 2025 ICD-10-CM code set includes 22 codes related to lung cancer, of which 16 are billable (specific enough to appear on a medical claim).
Malignant neoplasm of the bronchus and lung is coded under C34 in ICD-10-CM. Subcodes specify location (main bronchus, upper or middle or lower lobe) and laterality. Z85.118 covers personal history of other malignant neoplasm of bronchus and lung. Histology (small cell vs non-small cell) is documented narratively or in the morphology code.
Total Codes
22
Billable Codes
16
Categories
1
SNOMED CT Concepts
25+
Top 12 Relevant ICD-10 Codes
The codes most commonly assigned to lung cancer, ranked by primary-match status, billable status, and specificity. Tap a code to see its full ICD-10 detail page.
C34.90Malignant neoplasm of unsp part of unsp bronchus or lung
C34.91Malignant neoplasm of unsp part of right bronchus or lung
C34.92Malignant neoplasm of unsp part of left bronchus or lung
C34Malignant neoplasm of bronchus and lung
C34.2Malignant neoplasm of middle lobe, bronchus or lung
C34.00Malignant neoplasm of unspecified main bronchus
C34.01Malignant neoplasm of right main bronchus
C34.02Malignant neoplasm of left main bronchus
C34.10Malignant neoplasm of upper lobe, unsp bronchus or lung
C34.11Malignant neoplasm of upper lobe, right bronchus or lung
C34.12Malignant neoplasm of upper lobe, left bronchus or lung
C34.30Malignant neoplasm of lower lobe, unsp bronchus or lung
Primary Code Categories
These are the top-level ICD-10-CM categories for lung cancer. Click any code to see all specific subcodes within that group.
Billable / Specific Codes (16)
Specific ICD-10-CM codes that can be reported on medical claims for lung cancer.
C34.00Malignant neoplasm of unspecified main bronchus
C34.01Malignant neoplasm of right main bronchus
C34.02Malignant neoplasm of left main bronchus
C34.10Malignant neoplasm of upper lobe, unsp bronchus or lung
C34.11Malignant neoplasm of upper lobe, right bronchus or lung
C34.12Malignant neoplasm of upper lobe, left bronchus or lung
C34.2Malignant neoplasm of middle lobe, bronchus or lung
C34.30Malignant neoplasm of lower lobe, unsp bronchus or lung
C34.31Malignant neoplasm of lower lobe, right bronchus or lung
C34.32Malignant neoplasm of lower lobe, left bronchus or lung
C34.80Malignant neoplasm of ovrlp sites of unsp bronchus and lung
C34.81Malignant neoplasm of ovrlp sites of right bronchus and lung
C34.82Malignant neoplasm of ovrlp sites of left bronchus and lung
C34.90Malignant neoplasm of unsp part of unsp bronchus or lung
C34.91Malignant neoplasm of unsp part of right bronchus or lung
C34.92Malignant neoplasm of unsp part of left bronchus or lung
Cross-Mappings to Other Standards
ICD-10-CM codes for lung cancer link to several adjacent terminologies. These mappings are precomputed from official sources (NLM RxNav, UMLS Metathesaurus, SNOMED CT International) and served via AutoICD's reference and translate APIs.
SNOMED CT
25+ concepts mapped from this code group. Concept IDs include 1259528009, 126704000, 126707007, 187857006, ....
Browse SNOMED CT directoryUMLS Metathesaurus
24 CUIs indexed. Sample: C0348343, C0153490, C2004495, C2607931, ....
Browse UMLS directoryICD-11
ICD-11 (WHO 2022) classifies many of these conditions under different chapter and stem-code structures. Use the converter to see specific ICD-10 to ICD-11 mappings.
Open ICD-10 to ICD-11 converterFrequently Asked Questions
What is the ICD-10 code for lung cancer?
The primary ICD-10-CM codes for lung cancer are C34, C34.90, C34.91. Across all sub-categories, 22 codes are grouped under lung cancer, with 16 marked as billable (specific enough for a medical claim).
How many ICD-10 codes are there for lung cancer?
There are 22 ICD-10-CM codes related to lung cancer. Of these, 16 are billable specific codes and 6 are non-billable header categories that organize the specific codes underneath them. Header codes cannot be reported on a claim by themselves.
Is there a billable ICD-10 code for lung cancer?
Yes. 16 of the 22 ICD-10-CM codes for lung cancer are billable. Common examples include C34.00 (Malignant neoplasm of unspecified main bronchus); C34.01 (Malignant neoplasm of right main bronchus); C34.02 (Malignant neoplasm of left main bronchus). Code to the highest level of specificity supported by the documentation.
Which lung cancer ICD-10 code should I use for billing?
The most commonly used billable codes for lung cancer include: C34.00 (Malignant neoplasm of unspecified main bronchus); C34.01 (Malignant neoplasm of right main bronchus); C34.02 (Malignant neoplasm of left main bronchus). The correct code depends on the documented clinical presentation, including any complications, episode (acute / chronic), and laterality where applicable. Always code to the highest level of specificity supported by the clinical documentation.
Is C34 a billable ICD-10 code?
No, C34 (Malignant neoplasm of bronchus and lung) is a non-billable header code. You need to use a more specific child code for billing purposes.
What are the SNOMED CT concepts for lung cancer?
The ICD-10 codes for lung cancer map to at least 25 SNOMED CT concepts. Examples of SNOMED CT concept IDs in this group include 1259528009, 126704000, 126707007, 187857006, 233814000. SNOMED CT is a clinical terminology used in electronic health records; AutoICD's coding API returns SNOMED CT IDs alongside each ICD-10 code via the include_snomed=true flag.
What UMLS Concept Unique Identifiers (CUIs) cover lung cancer?
The ICD-10 codes for lung cancer are linked to 24 UMLS CUIs in the National Library of Medicine's Metathesaurus. Sample CUIs include C0348343, C0153490, C2004495, C2607931, C2837947. UMLS CUIs unify the same concept across SNOMED CT, ICD-10, ICD-11, RxNorm, MeSH, and dozens of other source vocabularies.
What are other names for lung cancer in ICD-10?
Lung Cancer may also be referred to as: lung cancer, bronchogenic carcinoma, non-small cell lung cancer, NSCLC, small cell lung cancer, SCLC. The same ICD-10-CM codes apply regardless of which term appears in the clinical documentation. Synonyms are surfaced by AutoICD's NER pass and mapped to the canonical ICD-10 family above.
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