R84: Abnormal findings in specimens from respiratory organs and thorax

Codes under R84 (Abnormal findings in specimens from respiratory organs and thorax). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.

Code	Description	Billable
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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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.

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