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ICD-10 Coding for Missed Period(N91.0, E28.2, N91.1)

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

Also known as:
AmenorrheaAbsent Menstruation
Related ICD-10 Code Ranges

Complete code families applicable to Missed Period

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

CodeDescription
N91.0Primary amenorrhea
N91.1Secondary amenorrhea
Primary ICD-10-CM Codes
Primary amenorrhea
N91.0Billable
Differential Codes

Alternative codes to consider when ruling out similar conditions

Secondary amenorrheaN91.1
Primary amenorrheaN91.0

Documentation & Coding Risks

Avoid these common issues when documenting Missed Period.

Failing to document LMP date

Impact

Clinical: Impacts diagnosis accuracy, Regulatory: Non-compliance with coding standards, Financial: Potential claim denials

Mitigation

Always record LMP in patient history, Use templates to ensure completeness

Using unspecified codes when more specific ones apply

Impact

Reimbursement: May affect DRG assignment and payment rates., Compliance: Increases risk of audit and non-compliance., Data Quality: Leads to inaccurate clinical data.

Mitigation

Ensure documentation specifies primary or secondary amenorrhea.

Unspecified Code Usage

Impact

Using N91.2 without specifying primary or secondary amenorrhea.

Mitigation

Educate providers on documentation requirements.

Frequently Asked Questions

Related condition guides

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