Abnormal Uterine Bleeding (AUB) is a common gynecological condition affecting women of reproductive age, characterized by irregular menstrual bleeding patterns. Proper diagnosis and treatment are essential, but equally important is accurate medical coding using the International Classification of Diseases, 10th Revision (ICD-10).
This guide provides an in-depth exploration of ICD-10 codes for AUB, ensuring healthcare providers, coders, and billing specialists correctly classify and document this condition for insurance claims and medical records.
ICD-10 Code for AUB
Understanding Abnormal Uterine Bleeding (AUB)
Definition and Overview
AUB refers to any deviation from normal menstrual bleeding in terms of duration, frequency, regularity, or volume. The FIGO (International Federation of Gynecology and Obstetrics) classification system divides AUB into structural (PALM) and non-structural (COEIN) causes.
Causes of AUB
| Category | Possible Causes |
|---|---|
| Structural (PALM) | Polyps, Adenomyosis, Leiomyoma, Malignancy |
| Non-Structural (COEIN) | Coagulopathy, Ovulatory Dysfunction, Endometrial, Iatrogenic, Not Classified |
Symptoms and Risk Factors
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Heavy menstrual bleeding (menorrhagia)
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Bleeding between periods (metrorrhagia)
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Prolonged bleeding (>7 days)
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Anemia due to blood loss
ICD-10 Coding for AUB
Primary ICD-10 Codes for AUB
The main ICD-10 code for AUB is:
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N93.9 – Abnormal uterine and vaginal bleeding, unspecified
However, more specific codes include:
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N92.0 – Excessive and frequent menstruation with regular cycle
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N92.1 – Excessive and frequent menstruation with irregular cycle
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N92.4 – Excessive bleeding in the premenopausal period
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N93.0 – Postcoital and contact bleeding
Secondary and Related Codes
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D62 – Acute posthemorrhagic anemia (if anemia is present)
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E28.2 – Polycystic ovarian syndrome (if PCOS is the cause)
Classification of AUB in ICD-10
AUB Due to Structural Causes (PALM)
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N82.7 – Polyp of cervix uteri
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N80.0 – Endometriosis of uterus (Adenomyosis)
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D25.9 – Leiomyoma of uterus, unspecified
AUB Due to Non-Structural Causes (COEIN)
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D68.9 – Coagulation defect, unspecified
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E28.8 – Other ovarian dysfunction
Diagnosis and Documentation for Proper Coding
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Pelvic ultrasound to detect fibroids or polyps
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Endometrial biopsy to rule out malignancy
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Blood tests (CBC, TSH, coagulation profile)
Common Coding Errors and How to Avoid Them
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Using unspecified codes (N93.9) when more specific codes apply
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Failing to document associated conditions (e.g., anemia, PCOS)
Treatment Options and Their Impact on Coding
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Hormonal therapy (N92.6 – Irregular menstruation, unspecified)
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Surgical options (hysterectomy – ICD-10 Z90.71)
Case Studies and Examples of AUB Coding
Case 1: A 35-year-old woman with heavy bleeding due to fibroids.
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Correct Code: N92.1 (Excessive bleeding, irregular cycle) + D25.9 (Uterine fibroid)
FAQs on ICD-10 Codes for AUB
Q1: What is the most accurate ICD-10 code for heavy menstrual bleeding?
A: N92.0 (Excessive menstruation with regular cycle) or N92.1 (irregular cycle).
Q2: Can AUB be coded with anemia?
A: Yes, use D62 (Acute posthemorrhagic anemia) as a secondary code.
Q3: What code is used for AUB due to PCOS?
A: E28.2 (Polycystic ovarian syndrome) + N92.6 (Irregular menstruation).
Conclusion
Accurate ICD-10 coding for AUB ensures proper reimbursement and clinical documentation. Understanding the PALM-COEIN classification and using specific codes improves billing accuracy. Always document associated conditions and treatments for comprehensive coding.
