atrioventricular block first-degree atrioventricular block https://github.com/monarch-initiative/mondo/issues/9097 https://www.malacards.org/card/first_degree_atrioventricular_block SCTID:270492004 MEDGEN:43215 atrioventricular block, first degree icd11.foundation:1438248929 ICD9:426.11 atrioventricular block first degree MONDO:0000466 DOID:0050821 NCIT:C62015 first degree atrioventricular block AV block first degree A disorder characterized by an electrocardiographic finding of prolonged PR interval for a specific population. For adults one common threshold is a PR interval greater than 0.20 seconds. UMLS:C0085614 first degree AV block ICD10CM:I44.0