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 | ✓ |
| R84.0 | Abnormal level of enzymes in specimens from respiratory organs and thorax | ✓ |
| R84.1 | Abnormal level of hormones in specimens from respiratory organs and thorax | ✓ |
| R84.1 | 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 | ✓ |
| R84.2 | 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 | ✓ |
| R84.3 | 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 | ✓ |
| R84.4 | Abnormal immunological findings in specimens from respiratory organs and thorax | ✓ |
| R84.5 | Abnormal microbiological 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 | ✓ |
| R84.6 | Abnormal cytological findings in specimens from respiratory organs and thorax | ✓ |
| R84.7 | Abnormal histological 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 | ✓ |
| R84.8 | Other abnormal findings in specimens from respiratory organs and thorax | ✓ |
| R84.9 | Unspecified abnormal finding in specimens from respiratory organs and thorax | ✓ |
| R84.9 | Unspecified abnormal finding in specimens from respiratory organs and thorax | ✓ |
Frequently asked questions
What is ICD-10-CM code R84?
R84 is an ICD-10-CM category covering Abnormal findings in specimens from respiratory organs and thorax. It contains 20 more specific diagnosis codes, 20 of which are billable.
Is R84 a billable code?
No — R84 is a category header and isn't billable on its own. Code to the highest level of specificity using one of its subcodes (for example R84.0 — Abnormal level of enzymes in specimens from respiratory organs and thorax). 20 of the 20 codes under R84 are billable.
What codes fall under R84?
R84 includes R84.0, R84.0, R84.1, R84.1, R84.2, plus 15 more. See the full list with descriptions and billable status above.
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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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