Liver function studies are blood tests that measure key enzymes (like ALT and AST), proteins (such as albumin), and bilirubin. When one or more of these values falls outside the normal range, the results are labeled "abnormal" (ICD-10 code R94.5). Abnormal results aren't a diagnosis-they're an alert that your liver needs further evaluation to find the underlying cause.
Many people with abnormal liver tests have no noticeable symptoms. If problems develop, you may experience:
Abnormal liver function tests can stem from a variety of conditions, including:
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Abnormal liver tests indicate that one or more liver values (such as ALT, AST, or bilirubin) are outside the normal range. Further testing helps determine the underlying cause.
A standard liver function panel measures enzymes and proteins including ALT, AST, ALP, GGT, bilirubin, albumin, and total protein to assess liver health.
The ICD-10 code for abnormal results of liver function studies is R94.5.
Yes. Common medications such as pain relievers (e.g., acetaminophen), antibiotics, and cholesterol-lowering drugs (statins) can temporarily raise liver enzyme levels.
No. Mild or temporary abnormalities can result from factors like recent illness, intense exercise, or certain foods. Persistent or marked elevations require further evaluation.
Preparation may include fasting for 8-12 hours before your blood draw. Follow your doctor's instructions regarding food, drink, and medications.
Maintaining a balanced diet, regular physical activity, healthy weight management, and avoiding excessive alcohol intake are key to supporting liver function.
Consult a liver specialist if your test results remain abnormal over time or if you develop symptoms like jaundice (yellowing of the skin or eyes), abdominal pain, or unexplained fatigue.
Follow-up testing is typically recommended every 3 to 6 months, or as directed by your physician based on the severity and persistence of your results.
A liver biopsy is usually reserved for cases where non-invasive tests (blood tests and imaging) do not provide clear answers or there is concern about significant liver damage.
