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ICD-10 Coding for T-Cell Lymphoma(C84.A, C86.6)

Complete ICD-10-CM coding and documentation guide for T-Cell Lymphoma. Includes clinical validation requirements, documentation requirements, and coding pitfalls.

Also known as:

Type Cell LymphomaPeripheral T-Cell LymphomaCutaneous T-Cell Lymphoma

Related ICD-10 Code Ranges

Complete code families applicable to T-Cell Lymphoma

C84.A-C84.9Primary Range

T-cell lymphomas including cutaneous and peripheral subtypes

This range covers the primary ICD-10 codes for various T-cell lymphoma subtypes.

Other specified types of T-cell lymphomas

Includes specific types like primary cutaneous CD30+ T-cell lymphoma.

Code Comparison: When to Use Each Code

Compare key differences between these codes to ensure accurate selection

CodeDescriptionWhen to UseKey Documentation
C84.ACutaneous T-cell lymphoma, unspecifiedUse when cutaneous T-cell lymphoma is diagnosed without further subtype specification.
  • Skin biopsy confirming T-cell origin
  • Absence of CD30 positivity
C86.6Primary cutaneous CD30+ T-cell proliferationsUse when CD30+ cutaneous T-cell lymphoma is confirmed.
  • Immunohistochemistry showing CD30 positivity
  • Exclusion of systemic involvement

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 T-cell lymphoma

Essential facts and insights about T-Cell Lymphoma

The ICD-10 code for unspecified cutaneous T-cell lymphoma is C84.A, while primary cutaneous CD30+ T-cell lymphoma is coded as C86.6.

Primary ICD-10-CM Codes for type cell lymphoma

Cutaneous T-cell lymphoma, unspecified
Non-billable Code

Decision Criteria

clinical Criteria

  • Biopsy confirms cutaneous T-cell lymphoma without specific subtype.

Applicable To

  • Mycosis fungoides
  • Sézary syndrome

Excludes

  • Peripheral T-cell lymphoma (C84.4)

Clinical Validation Requirements

  • Skin biopsy confirming T-cell origin
  • Absence of CD30 positivity

Code-Specific Risks

  • Risk of unspecified coding leading to denials.

Coding Notes

  • Ensure documentation specifies 'cutaneous' and excludes systemic involvement.

Ancillary Codes

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

Personal history of non-Hodgkin lymphoma

Z85.72
Use for patients with a history of lymphoma in remission.

Encounter for antineoplastic immunotherapy

Z51.11
Use when immunotherapy is part of the treatment plan.

Differential Codes

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

Primary cutaneous CD30+ T-cell lymphoma

C86.6
Requires documentation of CD30 positivity.

Anaplastic large cell lymphoma, ALK-negative

C84.7
Requires ALK-negative status and systemic involvement.

Documentation & Coding Risks

Avoid these common documentation and coding issues when documenting T-Cell Lymphoma to ensure proper reimbursement, maintain compliance, and reduce audit risk. These guidelines are particularly important when using ICD-10 code C84.A.

Impact

Clinical: Misclassification of lymphoma subtype., Regulatory: Non-compliance with coding standards., Financial: Potential for claim denials.

Mitigation Strategy

Ensure pathology reports include CD30 status., Train staff on documentation requirements.

Impact

Reimbursement: May lead to claim denials or reduced reimbursement., Compliance: Non-compliance with coding guidelines., Data Quality: Impacts accuracy of clinical data.

Mitigation Strategy

Ensure documentation specifies subtype or CD30 status.

Impact

Use of unspecified codes without supporting documentation.

Mitigation Strategy

Ensure detailed documentation of lymphoma subtype and CD30 status.

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 T-Cell Lymphoma, with expert answers to help guide accurate code selection and documentation.

Documentation Templates for T-Cell Lymphoma

Use these documentation templates to ensure complete and accurate documentation for T-Cell Lymphoma. These templates include all required elements for proper coding and billing.

Primary cutaneous CD30+ ALCL diagnosis

Specialty: Dermatology

Required Elements

  • CD30 positivity
  • Primary cutaneous origin
  • Exclusion of systemic involvement

Example Documentation

Assessment: Primary cutaneous CD30+ ALCL (C86.6). Pathology: Large anaplastic cells with CD30 expression, ALK-negative.

Examples: Poor vs. Good Documentation

Poor Documentation Example
T-cell lymphoma of skin.
Good Documentation Example
CD30+ anaplastic large cell lymphoma, primary cutaneous origin, ALK-negative.
Explanation
Specifies CD30 status and primary cutaneous origin, avoiding unspecified coding.

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