ICD-10 Diagnosis Code N91

Absent, scanty and rare menstruation

Diagnosis Code N91

ICD-10: N91
Short Description: Absent, scanty and rare menstruation
Long Description: Absent, scanty and rare menstruation
This is the 2017 version of the ICD-10-CM diagnosis code N91

Code Classification
  • Diseases of the genitourinary system
    • Noninflammatory disorders of female genital tract (N80-N98)
      • Absent, scanty and rare menstruation (N91)

Information for Patients


Also called: Menses, Menstrual period, Period

Menstruation, or period, is normal vaginal bleeding that occurs as part of a woman's monthly cycle. Every month, your body prepares for pregnancy. If no pregnancy occurs, the uterus, or womb, sheds its lining. The menstrual blood is partly blood and partly tissue from inside the uterus. It passes out of the body through the vagina.

Periods usually start between age 11 and 14 and continue until menopause at about age 51. They usually last from three to five days. Besides bleeding from the vagina, you may have

  • Abdominal or pelvic cramping
  • Lower back pain
  • Bloating and sore breasts
  • Food cravings
  • Mood swings and irritability
  • Headache and fatigue

Premenstrual syndrome, or PMS, is a group of symptoms that start before the period. It can include emotional and physical symptoms.

Consult your health care provider if you have big changes in your cycle. They may be signs of other problems that should be treated.

NIH: National Institute of Child Health and Human Development

  • Amenorrhea - primary
  • Endometrial ablation
  • Mittelschmerz
  • Painful menstrual periods
  • Secondary amenorrhea

[Read More]
Previous Code
Previous Code N90.9
Next Code
N91.0 Next Code