R78Header code — not billable
Findings of drugs and other substances, not normally found in blood
Short description: Find of drugs and oth substnc, not normally found in blood
- Chapter
- 18. Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified
- Category
- R78
- Effective date
- October 1, 2026
Related codes in category R78
R78.0Finding of alcohol in bloodYesR78.1Finding of opiate drug in bloodYesR78.2Finding of cocaine in bloodYesR78.3Finding of hallucinogen in bloodYesR78.4Finding of other drugs of addictive potential in bloodYesR78.5Finding of other psychotropic drug in bloodYesR78.6Finding of steroid agent in bloodYesR78.7Finding of abnormal level of heavy metals in bloodR78.71Abnormal lead level in bloodYesR78.72Abnormal gadolinium level in bloodYesR78.79Finding of abnormal level of heavy metals in bloodYesR78.8Finding of oth substances, not normally found in blood
Frequently asked questions
What is ICD-10 code R78?
R78 is an ICD-10-CM diagnosis code for Findings of drugs and other substances, not normally found in blood.
Is R78 a billable code?
No. R78 is a category/header code, not billable on its own — use one of its more specific child codes instead.
What ICD-10-CM chapter is R78 in?
R78 falls under Chapter 18: Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified.
When did R78 become effective?
R78 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to R78?
R78 belongs to category R78, which includes 12 other codes — see the related codes list on this page.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.