How is MTHFR mutation coded in ICD-10?

MTHFR mutation is primarily coded as E72.12 for symptomatic cases. For pregnancy-related complications, use O99.28 as the primary code.

Can MTHFR mutation be coded without symptoms?

No, asymptomatic MTHFR mutations should not be coded as E72.12. Use Z84.89 for family history without symptoms.

ICD-10 Coding for MTHFR Mutation(E72.12, E72.11, E72.1)

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Learn how to accurately code MTHFR mutation using ICD-10, including primary and pregnancy-related codes, documentation requirements, and common pitfalls.

Also known as:

Methylenetetrahydrofolate Reductase DeficiencyMTHFR Gene Mutation

Related ICD-10 Code Ranges

Complete code families applicable to MTHFR Mutation

E00-E89Primary Range

Endocrine, nutritional and metabolic diseases

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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
E72.12	Methylenetetrahydrofolate reductase deficiency	Use when there is documented enzyme deficiency and clinical manifestations.	Genetic test confirming pathogenic variants Elevated homocysteine levels Clinical symptoms such as thrombosis or pregnancy loss
O99.28	Other specified diseases and conditions complicating pregnancy, childbirth and the puerperium	Use as primary code for pregnancy-related MTHFR complications.	Pregnancy with documented MTHFR mutation and complications

Primary ICD-10-CM Codes

Methylenetetrahydrofolate reductase deficiency

E72.12Billable

Differential Codes

Alternative codes to consider when ruling out similar conditions

Cystathionine beta-synthase deficiencyE72.11

Documentation & Coding Risks

Avoid these common issues when documenting MTHFR Mutation.

Omitting clinical symptoms in documentation

Impact

Clinical: Inadequate patient care, Regulatory: Non-compliance with coding standards, Financial: Potential claim denials

Mitigation

Ensure all symptoms are documented, Review genetic test results

Coding E72.12 for asymptomatic carriers

Impact

Reimbursement: May lead to claim denials., Compliance: Non-compliance with coding guidelines., Data Quality: Inaccurate patient records.

Mitigation

Use Z84.89 for family history without symptoms.

Incorrect coding of asymptomatic carriers

Impact

Coding E72.12 without symptoms can trigger audits.

Mitigation

Use Z codes for asymptomatic cases.

Frequently Asked Questions

Documentation requirements, coding pitfalls and FAQs for conditions coded with E72.12.

Primary Code

E72.12

Methylenetetrahydrofolate reductase deficiency

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ICD-10 codes6

Coding risks3

FAQs2

ICD-10 Coding for MTHFR Mutation(E72.12, E72.11, E72.1)

Documentation & Coding Risks

Frequently Asked Questions

How is MTHFR mutation coded in ICD-10?

Can MTHFR mutation be coded without symptoms?

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