0, no fibrosis
1, fibrous expansion of some portal areas, with or without short fibrous septa
2, fibrous expansion of most portal areas, with or without short fibrous septa
3, fibrous expansion of most portal areas with occasional portal to portal bridging
4, fibrous expansion of most
portal areas with marked bridging (
portal to
portal as well as
portal to central)
5, marked bridging with occasional nodules (incomplete cirrhosis);
6, cirrhosis, probable or definite.