ICD-10-CM 2027
ICD-10 code for alcohol in blood findings
From the official ICD-10-CM alphabetic index entry “Findings, abnormal, inconclusive, without diagnosis › alcohol in blood”. Page updated September 29, 2026.
About coding alcohol in blood findings
The ICD-10-CM code for alcohol in blood findings is R78.0 (Finding of alcohol in blood).
Within R78 (findings of drugs and other substances, not normally found in blood), R78.0 is specifically for finding of alcohol in blood. Related codes cover opiate drug in blood (R78.1), cocaine in blood (R78.2), hallucinogen in blood (R78.3), other drugs of addictive potential in blood (R78.4), other psychotropic drug in blood (R78.5), steroid agent in blood (R78.6), abnormal level of heavy metals in blood (R78.7), other specified substances, not normally found in blood (R78.8) and 1 more.
Use an additional code for: external cause code (Y90.-), for detail regarding alcohol level. Use an additional code to identify any retained foreign body, if applicable (Z18.-).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
Common questions about alcohol in blood findings ICD-10 codes
What is the ICD-10 code for alcohol in blood findings?
- R78.0 — Finding of alcohol in blood.
Is R78.0 billable?
- Yes. R78.0 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can R78.0 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict R78.0 as a principal diagnosis.
Is R78.0 a CC or MCC?
- No. R78.0 is neither a CC nor an MCC under MS-DRG v44.0.