Furthermore, embedded in the phecodes for the standard PheRS were specific ICD-9 and ICD-10 codes for diagnoses that conflict with ATTRv, including wild-type ATTR and light chain amyloidosis (AL); co-occurance of these conditions with ATTRv is thought to be exceedingly rare and, therefore, their inclusion may contaminate PheRS calculations. The gene discussed is TTR; the disease is AL amyloidosis.