Abnormal findings in other body fluids and substances

This code signifies the presence of abnormal laboratory results from various bodily fluids or substances not specifically classified elsewhere. It indicates a deviation from normal physiological parameters found in samples such as cerebrospinal fluid (CSF), synovial fluid, peritoneal fluid, pleural fluid, or other unlisted body secretions.

Apply this code when diagnostic testing reveals abnormal findings in body fluids or substances that are not blood, urine, or tissue, and for which a more specific ICD-10-CM code does not exist. Documentation should clearly state the abnormal finding and the specific body fluid or substance analyzed.

• Do not use this code if a more specific code exists for the abnormal finding or the body fluid (e.g., abnormal CSF protein has a specific code).
• Always sequence this code after the definitive diagnosis if one is established, or as a primary diagnosis if the abnormal finding is the reason for the encounter and no definitive diagnosis has been made.
• Ensure the medical record specifies the type of body fluid or substance and the nature of the abnormality.