ICD-10 R91
Non-Billable HeaderAbnormal findings on diagnostic imaging of lung
About ICD-10-CM R91
ICD-10-CM code R91 represents Abnormal findings on diagnostic imaging of lung. This is a non-billable header code in the Symptoms, Signs, and Abnormal Findings chapter (block R91). The 2026 edition of ICD-10-CM R91 became effective on October 1, 2025. Non-billable codes cannot be used as a primary or secondary diagnosis on a claim, use a more specific child code instead.
Medicare LCD Coverage for R91
Local Coverage Determinations (LCDs) from CMS MACs that list R91 as a covered diagnosis.
This doesn't mean the code isn't covered, it means no MAC has issued a Local Coverage Determination naming this specific code. Coverage may still apply under National Coverage Determinations or general medical-necessity rules.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing R91.
Our payer policy database covers Aetna, Cigna, Anthem, BCBS, Humana, and Medicare Advantage plans, but R91 doesn't currently appear in any indexed policy. The code may still be covered under standard plan benefits.
CPT Codes Commonly Billed with R91
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
- 71020 Chest X-ray for respiratory symptoms Internal Medicine
Codes Adjacent To R91
Other codes in section R90-R94 (Abnormal findings on diagnostic imaging and in function studies, without diagnosis).
ICD-10 R91, Billing FAQ
Is ICD-10 code R91 billable? +
No, R91 is a non-billable header code. Use a more specific child code from block R91 when submitting claims.
What CPT codes are commonly billed with R91? +
Procedures frequently paired with R91 include: 71020.
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on May 31, 2026.
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