2024 ICD-10-CM Diagnosis Code N91.2

Amenorrhea, unspecified

ICD-10-CM Code:
N91.2
ICD-10 Code for:
Amenorrhea, unspecified
Is Billable?
Yes - Valid for Submission
Chronic Condition Indicator: [1]
Chronic
Code Navigator:

Code Classification

  • Diseases of the genitourinary system
    (N00–N99)
    • Noninflammatory disorders of female genital tract
      (N80-N98)
      • Absent, scanty and rare menstruation
        (N91)

N91.2 is a billable diagnosis code used to specify a medical diagnosis of amenorrhea, unspecified. The code is valid during the current fiscal year for the submission of HIPAA-covered transactions from October 01, 2023 through September 30, 2024.

This code is applicable to female patients only. It is clinically and virtually impossible to use this code on a non-female patient.

Unspecified diagnosis codes like N91.2 are acceptable when clinical information is unknown or not available about a particular condition. Although a more specific code is preferable, unspecified codes should be used when such codes most accurately reflect what is known about a patient's condition. Specific diagnosis codes should not be used if not supported by the patient's medical record.

Approximate Synonyms

The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

  • Amenorrhea
  • Amenorrhea due to congenital gonadotrophin releasing hormone deficiency
  • Amenorrhea due to disorder of ovary
  • Amenorrhea due to hypothalamic disorder
  • Cryptomenorrhea
  • Pathologic amenorrhea
  • Physiologic amenorrhea
  • Premenopausal amenorrhea

Clinical Classification

Clinical Information

  • Amenorrhea

    absence of menstruation.
  • Amenorrhea

    the absence of menses in a woman who has achieved reproductive age.
  • Amenorrhea, CTCAE|Amenorrhea

    a disorder characterized by the abnormal absence of menses for at least three consecutive menstrual cycles
  • Grade 2 Amenorrhea, CTCAE|Grade 2 Amenorrhea

    present
  • Primary Amenorrhea|Delayed Menarche|Delayed Menarche

    abnormally late or absent menarche in a female with normal secondary sexual characteristics.
  • Secondary Amenorrhea

    the cessation of menstruation for six months or more in a female that is not pregnant, breastfeeding or menopausal.

Index to Diseases and Injuries References

The following annotation back-references for this diagnosis code are found in the injuries and diseases index. The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10-CM code(s).

Code Edits

The Medicare Code Editor (MCE) detects and reports errors in the coding of claims data. The following ICD-10-CM Code Edits are applicable to this code:

  • Diagnoses for females only - The Medicare Code Editor detects inconsistencies between a patient’s sex and any diagnosis on the patient’s record, these edits apply to FEMALES only .

Convert N91.2 to ICD-9-CM

  • ICD-9-CM Code: 626.0 - Absence of menstruation
    Approximate Flag - The approximate mapping means there is not an exact match between the ICD-10 and ICD-9 codes and the mapped code is not a precise representation of the original code.

Patient Education


Menstruation

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 pain
  • 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


[Learn More in MedlinePlus]

Code History

  • FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
  • FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
  • FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016. This was the first year ICD-10-CM was implemented into the HIPAA code set.

Footnotes

[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

  • The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
  • The condition places limitations on self-care, independent living, and social interactions.