**Note 1:** Physician statement of fibrosis score can be used to code this data item when no other information is available. However, code 7 when the physician statement of fibrosis score is not based on histologic examination of the liver.
**Note 2:** FIB-4 is NOT a pathological fibrosis score of 4. It is a scoring method using the patient's age and relevant lab values to calculate a score. The medical record may show something like "FIB-4 = 3.52." Do not code FIB-4 values in this data item.
**Note 3:** AJCC classifies Ishak fibrosis scores 0-4 (none to moderate fibrosis) as F0, and Ishak fibrosis scores 5-6 (cirrhosis/severe fibrosis) as F1. This is not the same as METAVIR score F0 or F1.
**Note 4:** Record the results based on information collected during the initial work-up. If multiple biopsies are taken and have conflicting scores, use the results from the biopsy closest to the start of treatment. Information collected after the start of treatment may not be used to code this data item.
**Note 5:** Code the absence (code 0) or presence (code 1) of fibrosis as documented in the pathology report.
**Note 6:** If no score is mentioned, descriptive terms may be used to assign codes 0 and 1 - see specific terms in the table below.
**Note 7:** If a fibrosis score is stated but the scoring system is not recorded, consult with the physician. If no further information is available, code 9.