ICD-10-CM Code For Abnormal Findings On Diagnostic Imaging Of Lung: Group Overview
The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group R91 includes abnormal or unspecified findings on diagnostic imaging of the lungs such as solitary pulmonary nodules, localized or diffuse lung opacities, and non‑specific radiographic abnormalities that do not yet have a confirmed underlying diagnosis. These ICD-10-CM diagnosis codes are used to document clinical scenarios involving unexpected or unexplained imaging findings of the respiratory system, capturing the presence and characterization of imaging abnormalities relevant to care planning and follow‑up. Accurate coding within the ICD-10-CM R91 group supports proper claim adjudication, complete clinical documentation, and appropriate reimbursement.
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ICD-10-CM R91: Abnormal Findings On Diagnostic Imaging Of Lung Overview
The diagnoses in this group denote abnormal radiologic or imaging findings of the lungs that are not assigned a definitive diagnosis within the same encounter. They target the respiratory system and commonly include descriptions such as solitary pulmonary nodule, diffuse interstitial changes, or other nonspecific pulmonary opacities. Accurate coding matters for reimbursement because it documents the reason for imaging, guides subsequent workup, and supports medical necessity for services billed.