2006 ICD-9-CM Volume 1 Diagnosis Codes Home > Diseases Of Blood And Blood-Forming Organs 280-289 > Coagulation Defects 286.* > 2006 ICD-9-CM Diagnosis 286.2 Congenital factor xi deficiency View the most recent version of ICD-9-CM 286.2 A deficiency of blood coagulation factor XI (known as plasma thromboplastin antecedent or PTA or antihemophilic factor C) resulting in a systemic blood-clotting defect called hemophilia C or Rosenthal's syndrome, that may resemble classical hemophilia. 286.2 is a specific code that can be used to specify a diagnosis 286.2 contains 7 index entries View the ICD-9-CM Volume 1 286.* hierarchy Alternate Terminology Hemophilia C Plasma thromboplastin antecedent [PTA] deficiency Rosenthal's disease  Index entries containing 286.2: Deficiency, deficient antihemophilic factor (A) 286.0 C 286.2 factor (see also Defect, coagulation) 286.9 XI (congenital) (plasma thromboplastin antecedent) 286.2 plasma thromboplastin antecedent (PTA) 286.2 PTA 286.2 Disease, diseased - see also Syndrome Rosenthal's (factor XI deficiency) 286.2 Hemophilia (familial) (hereditary) 286.0 C 286.2 Rosenthal's disease (factor XI deficiency) 286.2