ICD-10 Diagnosis Code R78

Find of drugs and oth substnc, not normally found in blood

Diagnosis Code R78

ICD-10: R78
Short Description: Find of drugs and oth substnc, not normally found in blood
Long Description: Findings of drugs and other substances, not normally found in blood
This is the 2017 version of the ICD-10-CM diagnosis code R78

Not Valid for Submission
The code R78 is a "header" and not valid for submission for HIPAA-covered transactions.

Code Classification
  • Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00–R99)
    • Abnormal findings on examination of blood, without diagnosis (R70-R79)
      • Find of drugs and oth substnc, not normally found in blood (R78)

Information for Medical Professionals

According to ICD-10-CM guidelines this code should not to be used as a principal diagnosis code when a related definitive diagnosis has been established.
Index of Diseases and Injuries
References found for the code R78 in the Index of Diseases and Injuries:


Information for Patients


Laboratory Tests

Laboratory tests check a sample of your blood, urine, or body tissues. A technician or your doctor analyzes the test samples to see if your results fall within the normal range. The tests use a range because what is normal differs from person to person. Many factors affect test results. These include

  • Your sex, age and race
  • What you eat and drink
  • Medicines you take
  • How well you followed pre-test instructions

Your doctor may also compare your results to results from previous tests. Laboratory tests are often part of a routine checkup to look for changes in your health. They also help doctors diagnose medical conditions, plan or evaluate treatments, and monitor diseases.


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