85025

Complete (CBC) with automated differential WBC count

This code represents the performance of a complete blood count (CBC) which includes an automated white blood cell (WBC) differential count. A CBC is a panel of tests that measures various components and features of blood, including red blood cell count, white blood cell count, platelet count, hemoglobin, hematocrit, and red blood cell indices (e.g., MCV, MCH, MCHC, RDW). The automated differential WBC count determines the proportion of different types of white blood cells (neutrophils, lymphocytes, monocytes, eosinophils, basophils) using an automated analyzer. This comprehensive test provides crucial information about a patient's overall health and can detect a wide range of disorders, including anemia, infection, inflammation, and leukemia, aiding in diagnosis and treatment monitoring.

Clinical Indications

  • Routine health screening or wellness examination to assess overall health status.
  • Evaluation of symptoms such as fatigue, weakness, fever, bruising, bleeding, or dizziness.
  • Diagnosis and monitoring of various types of anemia (e.g., iron deficiency, megaloblastic, hemolytic).
  • Detection and monitoring of bacterial, viral, parasitic, or fungal infections.
  • Assessment of inflammation or inflammatory conditions (e.g., autoimmune diseases).
  • Monitoring the effects of certain medications, such as chemotherapy, radiation therapy, or immunosuppressants, that can impact blood cell production.
  • Diagnosis and ongoing monitoring of hematologic malignancies (e.g., leukemia, lymphoma, myelodysplastic syndromes).
  • Pre-operative assessment to evaluate overall health, identify potential bleeding risks, or detect anemia.
  • Evaluation of abnormal bleeding or clotting disorders.
  • Assessment of bone marrow function and response to therapy.

Procedure Steps

  1. **Specimen Collection**: A venous blood sample (typically 2-5 mL) is collected, usually from an arm vein, into an anticoagulant-containing tube (e.g., EDTA lavender top tube) to prevent clotting.
  2. **Sample Preparation**: The collected blood sample is gently mixed to ensure even distribution of cells and prevent coagulation.
  3. **Automated Analysis**: The prepared blood sample is loaded into an automated hematology analyzer.
  4. **Cell Counting and Sizing**: The analyzer uses various technologies (e.g., electrical impedance, light scattering, flow cytometry) to count and differentiate red blood cells, white blood cells, and platelets, as well as measure their size and volume.
  5. **Hemoglobin Measurement**: Hemoglobin concentration is typically measured spectrophotometrically.
  6. **Hematocrit Calculation**: Hematocrit is often calculated from the red blood cell count and mean corpuscular volume (MCV) or measured directly.
  7. **Red Blood Cell Indices Determination**: Mean corpuscular volume (MCV), mean corpuscular hemoglobin (MCH), mean corpuscular hemoglobin concentration (MCHC), and red cell distribution width (RDW) are calculated based on the measured values.
  8. **Automated WBC Differential**: The analyzer uses its internal algorithms and technologies to identify and quantify the percentage and absolute count of each type of white blood cell (neutrophils, lymphocytes, monocytes, eosinophils, basophils).
  9. **Result Generation**: The analyzer generates a comprehensive report containing all the measured and calculated parameters of the CBC with automated differential.
  10. **Validation and Review**: Laboratory professionals review the automated results for flags, critical values, or abnormalities that may indicate the need for manual microscopic review or further investigation.

Coding Guidelines

  • CPT code 85025 includes all components of a complete blood count (hemoglobin, hematocrit, red blood cell count, white blood cell count, platelet count, and red cell indices) and an automated differential white blood cell count. Do not report individual components of the CBC separately when 85025 is performed.
  • If a manual white blood cell differential is performed *in addition to* the automated differential (e.g., due to abnormal automated results requiring microscopic review of cell morphology), the manual differential may be reported separately (e.g., CPT code 85007) in addition to 85025. Clear medical necessity and documentation justifying the manual review must be present.
  • This code describes a laboratory procedure. For professional services related to the interpretation of results or patient management, separate Evaluation and Management (E/M) codes may be reported.
  • Medical necessity for ordering this test must be clearly documented in the patient's medical record, justifying the performance of a CBC with differential.
  • Check payer-specific policies for frequency limitations and specific diagnostic indications for reporting 85025.

Associated ICD-10 Codes