What is the ICD-10 code for an abnormal lung X-ray?

The ICD-10 code for an abnormal lung X-ray without a specific diagnosis is R91.8, used for nonspecific abnormal findings on lung imaging.

When should R91.8 be used?

R91.8 should be used when imaging shows an abnormal lung finding without a confirmed diagnosis, such as a nonspecific mass or density.

ICD-10 Coding for Abnormal Lung Imaging Findings(R91.8, C34.90, D14.30)

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Learn about ICD-10 coding for abnormal lung imaging findings, including when to use R91.8, D14.30, and C34.90. Ensure accurate documentation and coding compliance.

Also known as:

Abnormal Lung X-rayLung Mass on Imaging

Related ICD-10 Code Ranges

Complete code families applicable to Abnormal Lung Imaging Findings

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 when imaging shows an abnormality without a confirmed diagnosis.	Radiology report indicating abnormal finding without specific diagnosis No biopsy or histological confirmation
D14.30	Benign neoplasm of unspecified part of bronchus and lung	Use when a biopsy confirms a benign lung neoplasm.	Biopsy confirms benign nature Stable imaging over time
C34.90	Malignant neoplasm of unspecified part of bronchus or lung	Use when malignancy is confirmed by biopsy or histology.	Biopsy or histology confirms malignancy PET scan positive for malignancy

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

Malignant neoplasm of unspecified part of bronchus or lungC34.90

Other nonspecific abnormal finding of lung fieldR91.8

Documentation & Coding Risks

Avoid these common issues when documenting Abnormal Lung Imaging Findings.

Vague documentation of imaging findings

Impact

Clinical: May lead to inappropriate follow-up or missed diagnosis., Regulatory: Non-compliance with documentation standards., Financial: Potential for denied claims due to insufficient documentation.

Mitigation

Use structured templates for radiology reports, Ensure detailed descriptions of findings

Using C34.90 without biopsy confirmation

Impact

Reimbursement: Incorrect DRG assignment may occur., Compliance: Non-compliance with coding guidelines., Data Quality: Inaccurate cancer registry data.

Mitigation

Ensure malignancy is confirmed by biopsy before using C34.90.

Use of R91.8 without follow-up

Impact

Coding R91.8 without documented follow-up plan may trigger audits.

Mitigation

Ensure follow-up recommendations are documented.

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

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ICD-10 codes3

Coding risks3

FAQs2

ICD-10 Coding for Abnormal Lung Imaging Findings(R91.8, C34.90, D14.30)

Documentation & Coding Risks

Frequently Asked Questions

What is the ICD-10 code for an abnormal lung X-ray?

When should R91.8 be used?

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