R78: Findings of drugs and other substances, not normally found in blood
Codes under R78 (Findings of drugs and other substances, not normally found in blood). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.
| Code | Description | Billable |
|---|---|---|
| R78.0 | Finding of alcohol in blood | ✓ |
| R78.0 | Finding of alcohol in blood | ✓ |
| R78.1 | Finding of opiate drug in blood | ✓ |
| R78.1 | Finding of opiate drug in blood | ✓ |
| R78.2 | Finding of cocaine in blood | ✓ |
| R78.2 | Finding of cocaine in blood | ✓ |
| R78.3 | Finding of hallucinogen in blood | ✓ |
| R78.3 | Finding of hallucinogen in blood | ✓ |
| R78.4 | Finding of other drugs of addictive potential in blood | ✓ |
| R78.4 | Finding of other drugs of addictive potential in blood | ✓ |
| R78.5 | Finding of other psychotropic drug in blood | ✓ |
| R78.5 | Finding of other psychotropic drug in blood | ✓ |
| R78.6 | Finding of steroid agent in blood | ✓ |
| R78.6 | Finding of steroid agent in blood | ✓ |
| R78.7 | Finding of abnormal level of heavy metals in blood | — |
| R78.7 | Finding of abnormal level of heavy metals in blood | — |
| R78.8 | Finding of other specified substances, not normally found in blood | — |
| R78.8 | Finding of other specified substances, not normally found in blood | — |
| R78.9 | Finding of unspecified substance, not normally found in blood | ✓ |
| R78.9 | Finding of unspecified substance, not normally found in blood | ✓ |
| R78.71 | Abnormal lead level in blood | ✓ |
| R78.71 | Abnormal lead level in blood | ✓ |
| R78.72 | Abnormal gadolinium level in blood | ✓ |
| R78.79 | Finding of abnormal level of heavy metals in blood | ✓ |
| R78.79 | Finding of abnormal level of heavy metals in blood | ✓ |
| R78.81 | Bacteremia | ✓ |
| R78.81 | Bacteremia | ✓ |
| R78.89 | Finding of other specified substances, not normally found in blood | ✓ |
| R78.89 | Finding of other specified substances, not normally found in blood | ✓ |
Frequently asked questions
What is ICD-10-CM code R78?
R78 is an ICD-10-CM category covering Findings of drugs and other substances, not normally found in blood. It contains 29 more specific diagnosis codes, 25 of which are billable.
Is R78 a billable code?
No — R78 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 R78.0 — Finding of alcohol in blood). 25 of the 29 codes under R78 are billable.
What codes fall under R78?
R78 includes R78.0, R78.0, R78.1, R78.1, R78.2, plus 24 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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