ICD Code C91.1

ICD code C91.1 is B-cell chronic lymphocytic leukemia, a type of cancer that affects a specific kind of white blood cell called B lymphocytes.

1. Presence of abnormal lymphoblasts in the peripheral blood or bone marrow

2. Evidence of chronic progression of lymphocytic leukemia

3. Laboratory findings indicating elevated white blood cell count with a predominance of lymphocytes

4. Symptoms such as fatigue, fever, night sweats, or unexplained weight loss

5. Physical findings such as lymphadenopathy, splenomegaly, or hepatomegaly

6. Bone marrow biopsy confirming infiltration by lymphoblasts

7. Immunophenotyping consistent with precursor B-cell or T-cell lineage

8. Absence of features indicating acute transformation or blast crisis

Applicable CPT codes for ICD code C91.1 may include:

- 96413 (Chemotherapy administration, intravenous infusion technique; up to 1 hour, single or initial substance/drug)

- 96415 (Chemotherapy administration, intravenous infusion technique; each additional hour)

- 96417 (Chemotherapy administration, intravenous infusion technique; each additional sequential infusion of a new drug, up to 1 hour)

- 96409 (Chemotherapy administration, intravenous, push technique, single or initial substance/drug)

- 96411 (Chemotherapy administration, intravenous, push technique, each additional substance/drug)

- 85025 (Complete blood count, automated and automated differential WBC count)

- 38220 (Bone marrow aspiration)

- 38221 (Bone marrow biopsy)

- 96372 (Therapeutic, prophylactic, or diagnostic injection; subcutaneous or intramuscular)

- 96365 (Intravenous infusion, for therapy, prophylaxis, or diagnosis; initial, up to 1 hour)

- 96366 (Intravenous infusion, for therapy, prophylaxis, or diagnosis; each additional hour)

CPT code selection should be based on the specific services rendered and clinical documentation.

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