ICD-10 Coding for Bunion Left Foot(M21.612, M20.12)
Complete ICD-10-CM coding and documentation guide for Bunion Left Foot. Includes clinical validation requirements, documentation requirements, and coding pitfalls.
Also known as:
Related ICD-10 Code Ranges
Complete code families applicable to Bunion Left Foot
M20-M21Primary Range
Acquired deformities of fingers and toes
This range includes codes for bunions and hallux valgus, which are relevant for coding bunion deformities.
Code Comparison: When to Use Each Code
Compare key differences between these codes to ensure accurate selection
| Code | Description | When to Use | Key Documentation |
|---|---|---|---|
| M21.612 | Bunion of left foot | Use when there is a bony prominence without angular deformity of the toe. |
|
| M20.12 | Hallux valgus (acquired), left foot | Use when there is an angular deformity of the toe confirmed by X-ray. |
|
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 bunion left foot
Essential facts and insights about Bunion Left Foot
Primary ICD-10-CM Codes for bunion left foot
Decision Criteria
clinical Criteria
- Bony prominence without toe deviation
documentation Criteria
- X-ray shows no angular deformity
Applicable To
- Bony prominence without structural toe deviation
Excludes
- Hallux valgus (M20.12)
Clinical Validation Requirements
- Painful medial eminence
- Bursitis
- No metatarsophalangeal (MTP) joint subluxation
Code-Specific Risks
- Confusion with hallux valgus if documentation is not specific
Coding Notes
- Ensure documentation specifies no angular deformity to avoid incorrect coding.
M20.12 - Hallux valgus (acquired), left foot
Use when there is an angular deformity of the toe confirmed by X-ray.
Applicable To
- Angular deformity of the toe
Excludes
- Bunion without deformity (M21.612)
Clinical Validation Requirements
- Lateral deviation of hallux
- Overlapping toes
- MTP joint instability
- HVA ≥15° on X-ray
Coding Notes
Document angular measurements to support coding.
Ancillary Codes
Additional codes that should be used in conjunction with the main diagnosis codes when applicable.
Encounter for other orthopedic aftercare
Z47.89Documentation & Coding Risks
Avoid these common documentation and coding issues when documenting Bunion Left Foot to ensure proper reimbursement, maintain compliance, and reduce audit risk. These guidelines are particularly important when using ICD-10 code M21.612.
Impact
Clinical: Inaccurate diagnosis and treatment planning., Regulatory: Potential audit failures., Financial: Denials or incorrect reimbursement.
Mitigation Strategy
Ensure detailed documentation of clinical findings.
Impact
Reimbursement: Incorrect coding can lead to denials or overpayments., Compliance: Non-compliance with coding guidelines., Data Quality: Inaccurate clinical data representation.
Mitigation Strategy
Default to M21.612 unless angular deformity is proven
Impact
Using the wrong code can lead to audits and denials.
Mitigation Strategy
Ensure documentation supports the chosen code with specific clinical and imaging findings.
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 Bunion Left Foot, with expert answers to help guide accurate code selection and documentation.
Documentation Templates for Bunion Left Foot
Use these documentation templates to ensure complete and accurate documentation for Bunion Left Foot. These templates include all required elements for proper coding and billing.
Bunion evaluation and management
Specialty: PodiatryRequired Elements
- History of present illness
- Physical examination findings
- Imaging results
- Treatment history
Example Documentation
Examples: Poor vs. Good Documentation
Poor Documentation Example
Good Documentation Example
Explanation
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