R78.5: Finding of other psychotropic drug in blood
R78.5 is the billable ICD-10-CM diagnosis code for Finding of other psychotropic drug in blood. It is a fully specified code, so it can be reported on a claim (subject to clinical documentation and your payer's rules).
Frequently asked questions
What is ICD-10-CM code R78.5?
R78.5 is the ICD-10-CM diagnosis code for Finding of other psychotropic drug in blood. It belongs to category R78 (Findings of drugs and other substances, not normally found in blood).
Is R78.5 a billable code?
Yes. R78.5 is a billable, fully specified ICD-10-CM code, so it can be used on a claim (subject to documentation and payer rules).
What category does R78.5 belong to?
R78.5 is part of ICD-10-CM category R78 — Findings of drugs and other substances, not normally found in blood, which has 25 billable codes.
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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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