N91.5
Oligomenorrhea, unspecified
Clinical Classification Guidelines
Inclusion Terms
- Hypomenorrhea NOS
Medical Intelligence & Overview
Oligomenorrhea, classified under ICD-10 code N91.5, is a menstrual condition characterized by infrequent or irregular menstrual periods. Unlike the regular monthly cycle most women experience, individuals with oligomenorrhea have periods that occur more than 35 days apart or very irregularly, often leading to menstrual cycles that are sparse or infrequent. This condition is a common concern affecting women of reproductive age and can be associated with various hormonal imbalances and underlying health issues. Accurate diagnosis and management are essential to address potential fertility concerns, hormonal imbalances, or underlying health conditions that may be contributing to irregular menstrual patterns.
Causes & Symptoms
Clinical Causes: Hormonal imbalances, such as those involving estrogen and progesterone Polycystic ovary syndrome (PCOS) Thyroid dysfunction (hyperthyroidism or hypothyroidism) Excessive exercise or significant weight loss Stress and psychological factors Certain medications, including some hormonal treatments Chronic illnesses affecting endocrine function Menopause or premenopausal changes Pituitary gland disorders
Key Symptoms: Infrequent or irregular menstrual periods Light menstrual bleeding (hypomenorrhea) Possible absence of periods (amenorrhea) Symptoms related to hormonal imbalance, such as acne or hair changes Potential fertility issues Absence of other menstruation-related symptoms in some cases
Diagnostic & Treatment
Diagnosis Path: Diagnosing oligomenorrhea involves a comprehensive medical history review and physical examination. Healthcare providers typically perform blood tests to measure hormone levels, such as estrogen, progesterone, thyroid hormones, and insulin. Pelvic ultrasound imaging may be used to assess the ovaries and uterine structures for cysts or other abnormalities. Additional tests might include assessment for underlying conditions like PCOS or thyroid disease. The goal of diagnosis is to identify the underlying cause of irregular menstruation to guide appropriate management.
Treatment Protocols: Treatment strategies focus on addressing the underlying causes and managing symptoms. These may include:
Clinical Advice & FAQs
Billing Guidance
Is N91.5 a billable ICD-10 code?
Yes, N91.5 is a specific, billable code that can be used to indicate a diagnosis for reimbursement purposes.
Documentation
How do I report N91.5?
Clinical documentation must specify the nature of Oligomenorrhea, unspecified and any associated comorbidities for accurate reporting.
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