1: Adult - Age 18 or older with fulminant liver failure, with a life expectancy without a transplant of less than seven days.

Pediatric - Less than 18 years of age and in ICU due to acute or chronic liver failure, with a life expectancy without a transplant of less than seven days, and meeting other medical criteria. (See OPTN policies for description of fulminant liver failure and for pediatric medical criteria.)

2A: In critical care unit due to chronic liver failure with a life expectancy without a transplant of less than seven days and a long-term prognosis with a successful liver transplant equivalent to that of a patient with fulminant liver failure. Patient also has a Child-Turcotte-Pugh (CTP) score greater than or equal to 10 and meets other medical criteria. (See OPTN policies for description of CTP score and other medical criteria.) This classification does not apply to pediatric patients, i.e., patients less than 18 years of age.

2B: Age 18 or older and has CTP score greater than or equal to 10 or a CTP score greater than or equal to 7 and meets other medical criteria (see OPTN policies for description of CTP score and other medical criteria and for pediatric medical criteria).

3: Requires continuous care and, if age 18 and older, has a CTP score greater than or equal to 7.

7: Temporarily inactive.