2006 ICD-9-CM Volume 1 Diagnosis Codes Home > Symptoms, Signs, And Ill-Defined Conditions 780-799 > Nonspecific Abnormal Findings 790-796 > Nonspecific Findings On Examination Of Blood 790.* > 2006 ICD-9-CM Diagnosis 790.91 Abnormal arterial blood gases View the most recent version of ICD-9-CM 790.91 790.91 is a specific code that can be used to specify a diagnosis 790.91 contains 3 index entries View the ICD-9-CM Volume 1 790.* hierarchy  Index entries containing 790.91: Findings, abnormal, without diagnosis (examination) (laboratory test) 796.4 blood gas level (arterial) 790.91 oxygen saturation 790.91 PO2-oxygen ratio 790.91