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ICD-10 Coding for Migraine in Pregnancy(O99.3xx, O26.89x, G43.x)

Complete ICD-10-CM coding and documentation guide for Migraine in Pregnancy. Includes clinical validation requirements, documentation requirements, and coding pitfalls.

Also known as:

Pregnancy-related migraineGestational migraine

Related ICD-10 Code Ranges

Complete code families applicable to Migraine in Pregnancy

O99.3Primary Range

Mental disorders and diseases of the nervous system complicating pregnancy, childbirth, and the puerperium

Used for pre-existing migraines that are aggravated by pregnancy.

Other specified pregnancy-related conditions

Used for new-onset migraines directly caused by pregnancy.

Migraine

Used to specify the type of migraine in conjunction with pregnancy-related codes.

Code Comparison: When to Use Each Code

Compare key differences between these codes to ensure accurate selection

CodeDescriptionWhen to UseKey Documentation
O99.3xxMental disorders and diseases of the nervous system complicating pregnancyUse when a patient has a history of migraines that worsen during pregnancy.
  • History of migraine prior to pregnancy
  • Exacerbation during pregnancy
O26.89xOther specified pregnancy-related conditionsUse when a patient develops a new migraine during pregnancy.
  • No prior history of migraine
  • Onset during pregnancy
G43.xMigraineUse to specify the type of migraine in conjunction with pregnancy-related codes.
  • Documentation of migraine characteristics

Clinical Decision Support

Always review the patient's clinical documentation thoroughly. When in doubt, choose the more specific code and ensure documentation supports it.

Key Information: ICD-10 code for migraine in pregnancy

Essential facts and insights about Migraine in Pregnancy

Migraine in pregnancy is coded with O99.3xx for pre-existing cases and O26.89x for new-onset cases, paired with G43.x for migraine type.

Primary ICD-10-CM Codes for migraine in pregnancy

Mental disorders and diseases of the nervous system complicating pregnancy
Non-billable Code

Decision Criteria

clinical Criteria

  • History of migraine prior to pregnancy

documentation Criteria

  • Exacerbation during pregnancy

Applicable To

  • Pre-existing migraine aggravated by pregnancy

Excludes

  • New-onset migraine due to pregnancy

Clinical Validation Requirements

  • History of migraine prior to pregnancy
  • Exacerbation during pregnancy

Code-Specific Risks

  • Incorrect sequencing if used as secondary when it should be primary

Coding Notes

  • Ensure trimester is specified in the code.

Ancillary Codes

Additional codes that should be used in conjunction with the main diagnosis codes when applicable.

Specific migraine type

G43.x
Use to specify the type of migraine in conjunction with O99.3xx.

Differential Codes

Alternative codes to consider when ruling out similar conditions to the primary diagnosis.

Other specified pregnancy-related conditions

O26.89x
Use for new-onset migraines directly caused by pregnancy.

Mental disorders and diseases of the nervous system complicating pregnancy

O99.3xx
Use for pre-existing migraines aggravated by pregnancy.

Documentation & Coding Risks

Avoid these common documentation and coding issues when documenting Migraine in Pregnancy to ensure proper reimbursement, maintain compliance, and reduce audit risk. These guidelines are particularly important when using ICD-10 code O99.3xx.

Impact

Clinical: Inadequate information for treatment decisions., Regulatory: Non-compliance with documentation standards., Financial: Potential for claim denials due to insufficient documentation.

Mitigation Strategy

Ensure detailed documentation of headache characteristics, Include frequency and associated symptoms

Impact

Reimbursement: May lead to incorrect DRG assignment and reimbursement issues., Compliance: Non-compliance with coding guidelines for pregnancy complications., Data Quality: Inaccurate representation of the patient's condition in medical records.

Mitigation Strategy

Always pair G43.x with O99.3xx or O26.89x to reflect the pregnancy complication.

Impact

Reimbursement: Incorrect coding can affect DRG and reimbursement., Compliance: Non-compliance with ICD-10 coding requirements., Data Quality: Incomplete data for clinical analysis and reporting.

Mitigation Strategy

Ensure the trimester is included in the code to accurately reflect the stage of pregnancy.

Impact

Using G43.x as primary instead of O99.3xx or O26.89x.

Mitigation Strategy

Train staff on proper code sequencing for pregnancy-related conditions.

Documentation errors, coding pitfalls, and audit risks are interconnected aspects of medical coding and billing. Addressing all three areas helps ensure accurate coding, optimal reimbursement, and regulatory compliance.

Frequently Asked Questions

Common questions about ICD-10 coding for Migraine in Pregnancy, with expert answers to help guide accurate code selection and documentation.

Documentation Templates for Migraine in Pregnancy

Use these documentation templates to ensure complete and accurate documentation for Migraine in Pregnancy. These templates include all required elements for proper coding and billing.

Pre-existing migraine exacerbated during pregnancy

Specialty: Obstetrics

Required Elements

  • History of migraine
  • Exacerbation details
  • Trimester
  • Migraine characteristics

Example Documentation

Patient with a history of migraines without aura, exacerbated in the third trimester.

Examples: Poor vs. Good Documentation

Poor Documentation Example
Patient has migraines.
Good Documentation Example
Patient presents with recurrent unilateral throbbing headaches with photophobia and nausea, occurring 8 days/month over past 3 months, exacerbated in third trimester.
Explanation
The good example provides detailed characteristics and frequency, supporting accurate coding.

Need help with ICD-10 coding for Migraine in Pregnancy? Ask your questions below.

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