2006 ICD-9-CM Volume 1 Diagnosis Codes Home > Diseases Of The Genitourinary System 580-629 > Other Disorders Of Female Genital Tract 617-629 > Disorders Of Menstruation And Other Abnormal Bleeding From Female Genital Tract 626.* > 2006 ICD-9-CM Diagnosis 626.4 Irregular menstrual cycle View the most recent version of ICD-9-CM 626.4 626.4 is a specific code that can be used to specify a diagnosis 626.4 contains 8 index entries View the ICD-9-CM Volume 1 626.* hierarchy Alternate Terminology Irregular: bleeding NOS menstruation periods  Index entries containing 626.4: Bleeding (see also Hemorrhage) 459.0 irregular NEC 626.4 Cycle menstrual, irregular 626.4 Irregular, irregularity bleeding NEC 626.4 menstruation (cause unknown) 626.4 periods 626.4 Menstrual - see also Menstruation cycle, irregular 626.4 Menstruation irregular 626.4 Periods - see also Menstruation irregular 626.4