Non-Billable / Non-Specific Code
ICD-10-CM R78 is the diagnosis code for Findings of drugs and other substances, not normally found in blood. This code falls under the section "Abnormal findings on examination of blood, without diagnosis" within Chapter 18 â Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99). It is a non-billable/non-specific ICD-10-CM code that should not be used for reimbursement. A more specific sub-code is required for billing. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
The following conditions are not included in R78. If the patient has both, code each condition separately:
Understanding where R78 sits in the ICD-10-CM classification helps ensure proper coding:
No, R78 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.
R78 is the ICD-10-CM diagnosis code for "Findings of drugs and other substances, not normally found in blood". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
R78 is located in Section R70-R79 â "Abnormal findings on examination of blood, without diagnosis" within Chapter 18 of the ICD-10-CM Tabular List.
R78 has 10 sub-code(s) that provide more specific detail: R78.0, R78.1, R78.2, R78.3, R78.4 and more.
Use R78 when the patients documented diagnosis matches "Findings of drugs and other substances, not normally found in blood" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Findings of drugs and other substances, not normally found in blood is R78.
No, R78 is non-billable. Use a more specific sub-code for primary diagnosis billing.
R78 is in Chapter 18 of the ICD-10-CM Tabular List.
Yes, R78 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.