ICD-10 Guide

Irregular Menstrual Cycle

ICD-10 Coding for Irregular Menstrual Cycle(N92.6, N92.5)

PRIMARY SPECIALTYOB/GYN

COMPLEXITYHigh

LAST UPDATED09/15/2025

Sam Tuffun, PT, DPT

Physical Therapist | Medical Coding & Billing Contributor

Diagnosis Overview

What is Irregular Menstrual Cycle?

Essential facts and insights about Irregular Menstrual Cycle

Key Clinical Considerations:

Menstrual cycle length variation (less than 21 days or more than 35 days)
Irregular bleeding patterns (spotting, heavy bleeding)
Associated symptoms (pain, mood changes, weight gain)

Clinical Information

Clinical Criteria & Documentation Requirements

Patient menstrual history (cycle length, regularity)
Symptoms associated with irregularity (dysmenorrhea, PMS)
Results of diagnostic tests (ultrasound, hormonal levels)

Coding Guidelines

Usage Guidelines & Examples

Follow usage guidelines for coding based on specific symptoms.
Common errors include misclassifying the type of amenorrhea or irregularity.

Code Exclusions

Important Exclusions

Conditions like polycystic ovary syndrome (PCOS) or thyroid disorders.
Alternative codes for specific causes of irregular cycles.

Specialty Focus

Primary Specialty

OB/GYN

Specialty Applications

Women of reproductive age, especially those with hormonal imbalances.
OB/GYN clinics, primary care settings.

Coding Complexity

High Complexity

This diagnosis requires careful attention to:

Comprehensive clinical documentation
Accurate code selection based on clinical criteria
Proper exclusion considerations
Specialty-specific coding guidelines

Documentation

Documentation Templates

Billing Information

Billing Considerations

Ensure proper documentation for billing
Verify code specificity requirements
Check for any additional codes needed
Review payer-specific guidelines

Common Issues

Insufficient clinical documentation
Incorrect code selection
Missing supporting diagnoses
Timing and frequency documentation

Frequently Asked Questions

What are the documentation requirements?

Document menstrual history, symptoms, and any diagnostic test results.

What are the billing considerations?

Ensure accurate coding based on specific symptoms and diagnostic findings.

Irregular Menstrual Cycle

Diagnosis Overview

Key Clinical Considerations:

Clinical Information

Clinical Criteria & Documentation Requirements

Coding Guidelines

Usage Guidelines & Examples

Code Exclusions

Important Exclusions

Related ICD-10 Codes

Related CPT Codes

Specialty Focus

Primary Specialty

Specialty Applications

Coding Complexity

Documentation

Documentation Templates

Billing Information

Billing Considerations

Common Issues

Frequently Asked Questions

What are the documentation requirements?

What are the billing considerations?

Irregular Menstrual Cycle

Diagnosis Overview

Key Clinical Considerations:

Clinical Information

Clinical Criteria & Documentation Requirements

Coding Guidelines

Usage Guidelines & Examples

Code Exclusions

Important Exclusions

Related ICD-10 Codes

Related CPT Codes

Specialty Focus

Primary Specialty

Specialty Applications

Coding Complexity

Documentation

Documentation Templates

Billing Information

Billing Considerations

Common Issues

Frequently Asked Questions

What are the documentation requirements?

What are the billing considerations?