What is the ICD-10 code for missed menses?

The ICD-10 codes for missed menses include N91.0 for primary amenorrhea and N91.1 for secondary amenorrhea, depending on the clinical presentation.

How is secondary amenorrhea coded?

Secondary amenorrhea is coded as N91.1 in ICD-10, used for patients who have missed three or more consecutive menstrual cycles after previously having regular periods.

ICD-10 Coding for Missed Menses(N91.0, E28.3, N91.1)

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Explore ICD-10 coding for missed menses, including primary and secondary amenorrhea. Learn about documentation requirements and coding pitfalls.

Also known as:

AmenorrheaAbsence of Menstruation

Related ICD-10 Code Ranges

Complete code families applicable to Missed Menses

N00-N99Primary Range

Diseases of the genitourinary system

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Code Comparison: When to Use Each Code

Compare key differences between these codes to ensure accurate selection

Code	Description	When to Use	Key Documentation
N91.0	Primary amenorrhea	Use when a patient has not started menstruating by age 15 with secondary sexual characteristics or by age 16 without them.	No prior menstrual history Tanner stage assessment Pelvic ultrasound findings
N91.1	Secondary amenorrhea	Use for patients who have missed three or more consecutive menstrual cycles after previously having regular periods.	Documented absence of menstruation for at least 3 months Negative pregnancy test Exclusion of menopause

Primary ICD-10-CM Codes

Primary amenorrhea

N91.0Billable

Differential Codes

Alternative codes to consider when ruling out similar conditions

Irregular menstruationN92.6

Documentation & Coding Risks

Avoid these common issues when documenting Missed Menses.

Failure to document exclusion of pregnancy

Impact

Clinical: May lead to inappropriate treatment decisions., Regulatory: Non-compliance with coding guidelines., Financial: Potential claim denials due to incomplete documentation.

Mitigation

Always perform and document a pregnancy test for amenorrhea cases.

Coding oligomenorrhea as amenorrhea

Impact

Reimbursement: Incorrect coding can lead to denied claims., Compliance: Misclassification affects data accuracy., Data Quality: Impacts clinical decision-making and patient records.

Mitigation

Use N92.0 for oligomenorrhea unless there are 3 or more missed cycles.

Documentation of menstrual history

Impact

Incomplete menstrual history can lead to audit findings.

Mitigation

Ensure comprehensive documentation of menstrual history and exclusion criteria.

Frequently Asked Questions

Documentation requirements, coding pitfalls and FAQs for conditions coded with N91.0.

Primary Code

N91.0

Primary amenorrhea

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ICD-10 codes8

Coding risks3

FAQs2

ICD-10 Coding for Missed Menses(N91.0, E28.3, N91.1)

Documentation & Coding Risks

Frequently Asked Questions

What is the ICD-10 code for missed menses?

How is secondary amenorrhea coded?

Related condition guides