ICD-10-CM · Chapter 18 · R00-R99
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
Excludes 1 (cannot be coded together)
- blood-stained sputum (R04.2)
Subcodes
Subcodes are listed below for reference. Detail pages are not available for chapters 11–22.
| Code | Description | Billable |
|---|---|---|
| R84..0 | Abnormal level of enzymes in specimens from respiratory organs and thorax | Yes |
| R84..1 | Abnormal level of hormones in specimens from respiratory organs and thorax | Yes |
| R84..2 | Abnormal level of other drugs, medicaments and biological substances in specimens from respiratory organs and thorax | Yes |
| R84..3 | Abnormal level of substances chiefly nonmedicinal as to source in specimens from respiratory organs and thorax | Yes |
| R84..4 | Abnormal immunological findings in specimens from respiratory organs and thorax | Yes |
| R84..5 | Abnormal microbiological findings in specimens from respiratory organs and thorax | Yes |
| R84..6 | Abnormal cytological findings in specimens from respiratory organs and thorax | Yes |
| R84..7 | Abnormal histological findings in specimens from respiratory organs and thorax | Yes |
| R84..8 | Other abnormal findings in specimens from respiratory organs and thorax | Yes |
| R84..9 | Unspecified abnormal finding in specimens from respiratory organs and thorax | Yes |
Last reviewed: September 2026