Table 6.

Values/factors* used to calculate the lung allocation score**

Lung diagnosis code Age (years) Body mass index (BMI) Functional status Forced vital capacity (FVC) percent predicted Requirement for supplemental oxygen 6-minute walk distance (feet) Pulmonary artery systolic pressure (mm Hg) Mean pulmonary artery pressure (mPAP; mm Hg) Cardiac index (CI) in L/min/m2 Central venous pressure (mm Hg) Ventilation status pCO2 (current, highest, lowest) mm Hg Presence of diabetes Serum creatinine (current, highest, lowest) in mg/dL Total bilirubin (current, highest, lowest) in mg/dL

* Some values are adjusted according to Disease Group (A-D); sarcoidosis is classified as Group A if mPAP is ≤30 mm Hg but switches to Group D if mPAP is >30 mm Hg.

** The LAS calculation incorporates three different measures (waiting list urgency, post-transplant survival, and transplant benefit) to derive a Raw Allocation Score that is then normalized on a continuous scale of 0 to 100.

For additional information see concerning LAS components and calculations see https://optn.transplant.hrsa.gov/media/1200/optn_policies.pdf#nameddest=Policy_10. Organ Procurement and Transplantation Network Policies; Policy 10: Allocation of Lungs. Date accessed, 1/26/18.