CPT® Code 85018 is used to report quantitative measurement of hemoglobin (Hgb) in blood. Hemoglobin testing is a fundamental laboratory assessment used to evaluate oxygen-carrying capacity, screen for anemia, and monitor a wide range of medical conditions.
This code represents the hemoglobin test only, not a complete blood count (CBC) or specimen collection, which may be reported separately when appropriate.
Key Facts About CPT® 85018
- Service type: Laboratory test
- Test: Hemoglobin (Hgb) measurement
- Specimen type: Whole blood (typically venous or capillary)
- Test purpose: Evaluate red blood cell function and oxygen-carrying capacity
- Provider type: Physicians, laboratories, and qualified healthcare professionals
Common clinical indications:
- Screening for anemia
- Monitoring known anemia or blood disorders
- Evaluation of fatigue, weakness, or pallor
- Preoperative or routine health assessments
- Monitoring chronic conditions affecting blood counts
When to Use CPT® 85018
CPT 85018 is appropriate when:
- A hemoglobin-only test is ordered (not a full CBC panel)
- Screening or monitoring for anemia or blood disorders
- Evaluating symptoms such as fatigue, dizziness, or shortness of breath
- Performing routine or preventive lab assessments
Examples:
- Checking hemoglobin levels in a patient with suspected iron-deficiency anemia
- Monitoring hemoglobin in a patient undergoing treatment for chronic anemia
- Preoperative hemoglobin assessment
- Routine screening in primary care or wellness visits
Documentation Requirements
To support CPT 85018 billing, documentation should include:
- Patient identifiers and date of service
- Clinical indication for testing
- Specimen source (e.g., venous or capillary blood)
- Test performed (hemoglobin measurement)
- Test result and date reported
- Ordering provider information
Accurate documentation supports medical necessity and appropriate reimbursement.
Reimbursement and Coding Considerations
- CPT 85018 is generally covered when medically necessary
- Distinguish from CBC codes (e.g., 85025) when only hemoglobin is measured
- May be performed as a point-of-care test or through a laboratory
- Specimen collection may be billed separately if allowed
- Often used in conjunction with other lab tests depending on clinical context
- Frequency of testing may be subject to payer guidelines
Always verify payer-specific laboratory billing requirements.
How OptiMantra Supports Hemoglobin Testing
OptiMantra’s integrated EMR and practice management system streamlines documentation and billing for CPT 85018:
With OptiMantra, providers can:
- Order and document hemoglobin testing within the patient chart
- Track lab values longitudinally for ongoing patient monitoring
- Integrate external lab results and document point-of-care testing within a centralized clinical workflow
- Link results to diagnoses, symptoms, and treatment plans
- Maintain organized clinical and laboratory documentation that supports billing compliance and audit preparedness
- Simplify workflows for efficient lab management
By centralizing lab processes, OptiMantra helps practices improve efficiency, ensure compliance, and optimize reimbursement.
Try OptiMantra for free here!
Disclaimer: CPT® codes are maintained by the American Medical Association. This guide is for informational purposes only and does not replace official coding guidelines or payer policies.
.png)
