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Home/Diagnosis/ICD-10 Coding for Chronic Lymphocytic Leukemia

ICD-10 Coding for Chronic Lymphocytic Leukemia

C91.10
C91.11

Complete ICD-10-CM coding and documentation guide for icd-10 coding for chronic lymphocytic leukemia includes clinical validation requirements, medical necessity guidelines, and coding policies.

Also Known as:
CLL
Chronic Lymphatic Leukemia
chronic lymphoblastic leukemia
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Key Information: ICD-10 Coding for Chronic Lymphocytic Leukemia

Essential facts and insights about ICD-10 Coding for Chronic Lymphocytic Leukemia

Use ICD-10 code C91.10 for chronic lymphocytic leukemia of b-cell type not having achieved remission, ensuring proper documentation in clinical notes.

Primary ICD-10-CM Codes

Chronic lymphocytic leukemia of B-cell type not having achieved remission

Billable Code
C91.10
Billable

Diagnostic Criteria

  • • Absolute lymphocyte count ≥5,000/μL
  • • Flow cytometry confirmation of CD5+/CD19+/CD23+

Applicable To

  • • Active CLL

Important Notes

  • • Ensure documentation specifies 'not in remission' and includes flow cytometry results.

Chronic lymphocytic leukemia of B-cell type in remission

Billable Code
C91.11
Billable

Diagnostic Criteria

  • • Flow cytometry showing <5% CLL cells in bone marrow
  • • Normal CBC for ≥2 months

Applicable To

  • • CLL in remission

Important Notes

  • • Document remission status with supporting lab results.
Ancillary Codes

Additional codes that may be used with this diagnosis

D59.1

Secondary thrombocytopenia

Use when thrombocytopenia is due to bone marrow infiltration by CLL.

Frequently Asked Questions

What is the ICD-10 code for chronic lymphocytic leukemia?

The ICD-10 code for chronic lymphocytic leukemia not in remission is C91.10. Use C91.11 for CLL in remission.

How do you code CLL in remission?

Code C91.11 is used for chronic lymphocytic leukemia in remission, confirmed by flow cytometry and normal CBC results.

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