Specific code 2015 ICD-9-CM Diagnosis Code 626.4
Irregular menstrual cycle
  • 2015
  • Billable Code
  • Female Only Dx
  • ICD-9-CM 626.4 will be replaced by an equivalent ICD-10-CM code (or codes) when the United States transitions from ICD-9-CM to ICD-10-CM on October 1, 2015.
  • ICD-9-CM 626.4 is a billable medical code that can be used to specify a diagnosis on a reimbursement claim.
Disease Synonyms
  • Irregular periods
Clinical Information
  • A disorder characterized by irregular cycle or duration of menses
  • Deviations from the normal process; e.g. Delayed, difficult, profuse, scanty, unusual bleeding, etc
Applies To
  • Irregular:
    • bleeding NOS
    • menstruation
    • periods
ICD-9-CM Coding Information
  • 626.4 is only applicable to female patients.
Convert to ICD-10-CM: 626.4 converts approximately to:
  • 2015 ICD-10-CM N92.5 Other specified irregular menstruation
  • 2015 ICD-10-CM N92.6 Irregular menstruation, unspecified
ICD-9-CM Volume 2 Index entries containing back-references to 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
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 626.4 is one of thousands of ICD-9-CM codes used in healthcare. Although ICD-9-CM and CPT codes are largely numeric, they differ in that CPT codes describe medical procedures and services. Can't find a code? Start at the root of ICD-9-CM, check the 2015 ICD-9-CM Index or use the search engine at the top of this page to lookup any code.