What is the ICD-10 code for a lung mass?

The ICD-10 code for a nonspecific lung mass is R91.8. If the mass is confirmed malignant, use C34.90 or a more specific code based on location and laterality.

How do you code a benign lung mass?

For a benign lung mass, use ICD-10 code D14.30, provided the biopsy confirms benign histology.

ICD-10 Coding for Mass on Lung(R91.8, C34.90, D14.30)

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Explore detailed ICD-10 coding guidelines for lung masses, including primary, benign, and malignant neoplasms. Learn about documentation requirements and coding pitfalls.

Also known as:

Lung MassPulmonary MassLung Lesion

Related ICD-10 Code Ranges

Complete code families applicable to Mass on Lung

R00-R99Primary Range

Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified

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Code Comparison: When to Use Each Code

Compare key differences between these codes to ensure accurate selection

Code	Description	When to Use	Key Documentation
R91.8	Other nonspecific abnormal finding of lung field	Use for initial findings of a lung mass on imaging when no specific diagnosis is confirmed.	Imaging report indicating a mass or lesion without confirmed pathology
C34.90	Malignant neoplasm of unspecified part of unspecified bronchus or lung	Use when a lung mass is confirmed to be malignant, but specific site or laterality is not documented.	Pathology report confirming malignancy Histology type and laterality
D14.30	Benign neoplasm of unspecified bronchus and lung	Use when a lung mass is confirmed to be benign.	Biopsy confirming benign histology

Primary ICD-10-CM Codes

Other nonspecific abnormal finding of lung field

R91.8Billable

Differential Codes

Alternative codes to consider when ruling out similar conditions

Solitary pulmonary noduleR91.1

Neoplasm of uncertain behavior of bronchus and lungD38.1

Malignant neoplasm of unspecified part of unspecified bronchus or lungC34.90

Documentation & Coding Risks

Avoid these common issues when documenting Mass on Lung.

Omitting laterality in malignant neoplasm coding.

Impact

Clinical: Inaccurate treatment planning., Regulatory: Potential audit issues., Financial: Incorrect reimbursement.

Mitigation

Verify imaging reports for laterality., Include laterality in documentation.

Using R91.8 after malignancy is confirmed.

Impact

Reimbursement: Incorrect DRG assignment leading to potential underpayment., Compliance: Non-compliance with coding guidelines., Data Quality: Inaccurate clinical data affecting patient records.

Mitigation

Replace R91.8 with the appropriate C34.xx code.

Specificity in coding

Impact

Lack of specificity in coding lung masses can lead to audits.

Mitigation

Ensure detailed documentation of imaging and pathology findings.

Frequently Asked Questions

Documentation requirements, coding pitfalls and FAQs for conditions coded with R91.8.

Primary Code

R91.8

Other nonspecific abnormal finding of lung field

Quick Navigation

ICD-10 codes7

Coding risks3

FAQs2

ICD-10 Coding for Mass on Lung(R91.8, C34.90, D14.30)

Documentation & Coding Risks

Frequently Asked Questions

What is the ICD-10 code for a lung mass?

How do you code a benign lung mass?

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