R91.8: Other nonspecific abnormal finding of lung field
R91.8 is the billable ICD-10-CM diagnosis code for Other nonspecific abnormal finding of lung field. It is a fully specified code, so it can be reported on a claim (subject to clinical documentation and your payer's rules).
Frequently asked questions
What is ICD-10-CM code R91.8?
R91.8 is the ICD-10-CM diagnosis code for Other nonspecific abnormal finding of lung field. It belongs to category R91 (Abnormal findings on diagnostic imaging of lung).
Is R91.8 a billable code?
Yes. R91.8 is a billable, fully specified ICD-10-CM code, so it can be used on a claim (subject to documentation and payer rules).
What category does R91.8 belong to?
R91.8 is part of ICD-10-CM category R91 — Abnormal findings on diagnostic imaging of lung, which has 4 billable codes.
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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
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