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ICD-10 Coding for Mycosis Fungoides(C84.0, C84.01, C84.09)

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Explore detailed ICD-10 coding guidelines for Mycosis Fungoides, including site-specific codes, documentation requirements, and common pitfalls.

Also known as:
Alibert-Bazin syndromeCutaneous T-cell lymphoma
Related ICD-10 Code Ranges

Complete code families applicable to Mycosis Fungoides

C00-D49Primary Range

Neoplasms

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Code Comparison: When to Use Each Code

Compare key differences between these codes to ensure accurate selection

CodeDescription
C84.0Mycosis fungoides
C84.01Mycosis fungoides, lymph nodes of head, face, and neck
Primary ICD-10-CM Codes
Mycosis fungoides
C84.0
Differential Codes

Alternative codes to consider when ruling out similar conditions

Peripheral T-cell lymphomaC84.4

Use only if pathology explicitly excludes Mycosis Fungoides.

Documentation & Coding Risks

Avoid these common issues when documenting Mycosis Fungoides.

Omitting site-specific details in documentation.

Impact

Clinical: Leads to inaccurate diagnosis coding., Regulatory: Potential non-compliance with coding standards., Financial: May result in claim denials or reduced reimbursement.

Mitigation

Always document the specific site of MF involvement., Include biopsy and imaging results in the medical record.

Using C84.0 for 'cutaneous T-cell lymphoma NOS'.

Impact

Reimbursement: Incorrect coding may lead to denied claims., Compliance: Non-compliance with coding guidelines., Data Quality: Inaccurate clinical data representation.

Mitigation

Query provider to confirm Mycosis Fungoides vs. other CTCL subtypes.

Site-specific coding

Impact

Failure to document specific site involvement can lead to audit issues.

Mitigation

Ensure thorough documentation of biopsy and imaging results.

Frequently Asked Questions

Related condition guides

Documentation requirements, coding pitfalls and FAQs for conditions coded with C84.0.