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ICD-10 Coding for Hallux Valgus(M20.11, G89.18, M20.1)

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Learn about the ICD-10 coding for hallux valgus, including documentation requirements and coding pitfalls. Ensure accurate billing and compliance with our detailed guide.

Also known as:
BunionMetatarsus Primus Varus
Related ICD-10 Code Ranges

Complete code families applicable to Hallux Valgus

M00-M99Primary Range

Diseases of the musculoskeletal system and connective tissue

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Code Comparison: When to Use Each Code

Compare key differences between these codes to ensure accurate selection

CodeDescription
M20.11Acquired hallux valgus, right foot
Q66.212Congenital metatarsus primus varus, left foot
Primary ICD-10-CM Codes
Hallux valgus (acquired), right foot
M20.11Billable
Differential Codes

Alternative codes to consider when ruling out similar conditions

Asymptomatic bunionM21.61
Acquired hallux valgus, left footM20.12

Documentation & Coding Risks

Avoid these common issues when documenting Hallux Valgus.

Omitting laterality in documentation

Impact

Clinical: Ambiguity in treatment records, Regulatory: Potential for audit issues, Financial: Claims denial due to unspecified coding

Mitigation

Standardize documentation templates to include laterality, Educate staff on importance of complete documentation

Using M21.612 for surgical cases

Impact

Reimbursement: Denial due to incorrect coding, Compliance: Non-compliance with coding guidelines, Data Quality: Inaccurate clinical data representation

Mitigation

Switch to M20.1x if structural deformity/pain present

Incorrect coding of hallux valgus procedures

Impact

Using incorrect CPT codes for bunionectomy can lead to audits.

Mitigation

Verify procedure details and match with appropriate CPT codes.

Frequently Asked Questions

Related condition guides

Documentation requirements, coding pitfalls and FAQs for conditions coded with M20.11.