Abnormal level of substances chiefly nonmedicinal as to source in specimens from digestive organs and abdominal cavity

R85.3 (“Abnormal level of substances chiefly nonmedicinal as to source in specimens from digestive organs and abdominal cavity”) is a diagnosis code that identifies a specific condition, injury, or finding on a medical claim in the ICD-10-CM code set. Whether it is billed — and whether a payer covers it — depends on the clinical setting, documentation, and plan rules.