Abnormal findings on examination of other body fluids, substances and tissues, without diagnosis (R83-R89)
R84: Abnormal findings in specimens from respiratory organs and thorax

includes
abnormal findings in bronchial washings
abnormal findings in nasal secretions
abnormal findings in pleural fluid
abnormal findings in sputum
abnormal findings in throat scrapings

excludes1
blood-stained sputum (R04.2)
R84.0: Abnormal level of enzymes in specimens from respiratory organs and thorax
R84.1: Abnormal level of hormones in specimens from respiratory organs and thorax
R84.2: Abnormal level of other drugs, medicaments and biological substances in specimens from respiratory organs and thorax
R84.3: Abnormal level of substances chiefly nonmedicinal as to source in specimens from respiratory organs and thorax
R84.4: Abnormal immunological findings in specimens from respiratory organs and thorax
R84.5: Abnormal microbiological findings in specimens from respiratory organs and thorax
R84.6: Abnormal cytological findings in specimens from respiratory organs and thorax
R84.7: Abnormal histological findings in specimens from respiratory organs and thorax
R84.8: Other abnormal findings in specimens from respiratory organs and thorax
R84.9: Unspecified abnormal finding in specimens from respiratory organs and thorax

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