ICD-10 Coding for Chronic Lymphocytic Leukemia(C91.10, C91.11)
Complete ICD-10-CM coding and documentation guide for Chronic Lymphocytic Leukemia. Includes clinical validation requirements, documentation requirements, and coding pitfalls.
Also known as:
Related ICD-10 Code Ranges
Complete code families applicable to Chronic Lymphocytic Leukemia
C91.1-C91.13Primary Range
Chronic lymphocytic leukemia of B-cell type
This range covers all stages and types of chronic lymphocytic leukemia, including active disease, remission, and transformation.
Code Comparison: When to Use Each Code
Compare key differences between these codes to ensure accurate selection
| Code | Description | When to Use | Key Documentation |
|---|---|---|---|
| C91.10 | Chronic lymphocytic leukemia of B-cell type not having achieved remission | Use when CLL is active and not in remission. |
|
| C91.11 | Chronic lymphocytic leukemia of B-cell type in remission | Use when CLL is confirmed to be in remission. |
|
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 chronic lymphocytic leukemia
Essential facts and insights about Chronic Lymphocytic Leukemia
Primary ICD-10-CM Codes for chronic lymphocytic leukemia
Decision Criteria
clinical Criteria
- Patient has active CLL with lymphocyte count ≥5,000/μL.
Clinical Validation Requirements
- Absolute lymphocyte count ≥5,000/μL
- Flow cytometry confirmation of CD5+/CD19+/CD23+
Code-Specific Risks
- Overcoding if remission is achieved
Coding Notes
- Ensure documentation specifies 'not in remission' and includes flow cytometry results.
C91.11 - Chronic lymphocytic leukemia of B-cell type in remission
Use when CLL is confirmed to be in remission.
Applicable To
- CLL in remission
Excludes
- Active CLL (C91.10)
Clinical Validation Requirements
- Flow cytometry showing <5% CLL cells in bone marrow
- Normal CBC for ≥2 months
Coding Notes
Document remission status with supporting lab results.
Ancillary Codes
Additional codes that should be used in conjunction with the main diagnosis codes when applicable.
Secondary thrombocytopenia
D59.1Differential Codes
Alternative codes to consider when ruling out similar conditions to the primary diagnosis.
Small lymphocytic lymphoma
C83.00Documentation & Coding Risks
Avoid these common documentation and coding issues when documenting Chronic Lymphocytic Leukemia to ensure proper reimbursement, maintain compliance, and reduce audit risk. These guidelines are particularly important when using ICD-10 code C91.10.
Impact
Clinical: Misrepresentation of patient's disease status., Regulatory: Potential non-compliance with coding standards., Financial: Incorrect reimbursement due to coding errors.
Mitigation Strategy
Regularly update patient records with lab results., Verify remission status before coding.
Impact
Reimbursement: Incorrect coding may affect DRG assignment and reimbursement., Compliance: Non-compliance with coding guidelines., Data Quality: Inaccurate clinical data representation.
Mitigation Strategy
Verify remission status with lab results and use C91.11 if applicable.
Impact
Inadequate documentation of remission status.
Mitigation Strategy
Ensure all remission criteria are met and documented.
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 Chronic Lymphocytic Leukemia, with expert answers to help guide accurate code selection and documentation.
Documentation Templates for Chronic Lymphocytic Leukemia
Use these documentation templates to ensure complete and accurate documentation for Chronic Lymphocytic Leukemia. These templates include all required elements for proper coding and billing.
New CLL Diagnosis
Specialty: HematologyRequired Elements
- Patient history
- Physical examination findings
- Laboratory results
- Flow cytometry results
Example Documentation
Examples: Poor vs. Good Documentation
Poor Documentation Example
Good Documentation Example
Explanation
Need help with ICD-10 coding for Chronic Lymphocytic Leukemia? Ask your questions below.