Summary & Overview
HCPCS G0307: Complete CBC Automated Without Platelet Count
HCPCS Level II code G0307 denotes an automated complete blood count that measures hemoglobin, hematocrit, red blood cell count, and white blood cell count but does not include a platelet count. As a commonly ordered hematology panel, this test has implications for clinical decision-making, laboratory workflow, and national payer coverage policies because it represents a targeted, lower-component laboratory evaluation compared with a full CBC.
Key payers addressed in this publication include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of how G0307 is defined, typical sites of service where the test is performed, and the clinical situations that commonly prompt ordering of a CBC without platelets. The report summarizes benchmark considerations for utilization and reimbursement, highlights any recent policy updates affecting laboratory testing reimbursement, and situates G0307 within common laboratory service lines for coding and billing teams.
This analysis is written for a national audience and provides practical reference material for coding specialists, laboratory managers, and compliance staff seeking clarity on the code description, service classification, and payer coverage landscape. Data not available in the input is noted where applicable.
Billing Code Overview
HCPCS Level II code G0307 describes a complete automated complete blood count (CBC) that reports hemoglobin (hgb), hematocrit (hct), red blood cell count (rbc), and white blood cell count (wbc), performed without platelet count. This service is a laboratory hematology test typically performed when a focused panel excluding platelets is clinically indicated.
Service type: Automated hematology laboratory test (CBC without platelet count)
Typical site of service: Clinical laboratory, hospital laboratory, outpatient laboratory collection site
Clinical & Coding Specifications
Clinical Context
A typical patient is an adult presenting to an outpatient laboratory, primary care clinic, or ambulatory surgery center for routine evaluation of anemia, infection, or chronic disease monitoring. The provider orders a complete blood count without platelet count — coded as G0307 — when automated cell counts for hemoglobin, hematocrit, red blood cell (RBC) indices, and white blood cell (WBC) count are needed but platelet enumeration is not required. Specimens are collected by venipuncture or from an existing peripheral line, labeled, and sent to the on-site or reference laboratory. Results are entered into the electronic health record and reviewed by the ordering clinician to guide diagnosis, medication adjustments (for example iron therapy, antibiotics, or chemotherapy dosing considerations), or further testing such as iron studies, peripheral smear, or reticulocyte count. Typical sites of service include outpatient laboratory draw stations, physician offices, community clinics, and hospital outpatient departments.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
00 | Service not otherwise specified (default) | Use when no other modifier applies and the claim represents the standard service |
11 | Services provided as reported (default billing) | Use to indicate the service was performed as described |
22 | Increased procedural services | Use when work required is substantially greater than typical (documentation required) |
23 | Unusual anesthesia — not otherwise reportable | Rarely used for lab; not typically applicable but included in input |
26 | Professional component | Use when only the professional component (interpretation) is billed separate from technical lab processing |
52 | Reduced services | Use when the service provided is partially reduced or incomplete |
53 | Discontinued procedure | Use when specimen collection or test was started but discontinued for documented reasons |
90 | Reference (outside) laboratory | Use when testing is performed by an outside reference laboratory and billed by the ordering provider |
TC | Technical component | Use when only the laboratory processing (instrumentation, technician) is billed |
QX | Ordering/servicing provider (CLIA waived/modifier for validation) | Use when distinguishing laboratorial personnel qualifications for contractual or payment reasons |
| Taxonomy Code | Specialty | Notes |
|---|---|---|
207R00000X | Internal Medicine | Primary care clinicians who commonly order CBC testing |
207Q00000X | Family Medicine | Office-based providers ordering routine CBCs |
207K00000X | Emergency Medicine | Emergency clinicians ordering CBCs for acute presentations |
208D00000X | Obstetrics & Gynecology | OB/GYN providers monitoring pregnancy-related anemia |
207L00000X | Hematology & Oncology | Specialists ordering CBCs for cancer therapy monitoring |
Related Diagnoses
| ICD-10 Code | Description | Clinical Relevance |
|---|---|---|
D50.9 | Iron deficiency anemia, unspecified | CBC used to screen and monitor hemoglobin and hematocrit in suspected anemia |
D64.9 | Anemia, unspecified | CBC provides baseline red cell indices and hemoglobin levels |
R50.9 | Fever, unspecified | WBC count from CBC aids in evaluating possible infection or inflammatory processes |
J18.9 | Pneumonia, unspecified organism | CBC assists in assessing leukocytosis and response to infection |
Z79.2 | Long term (current) use of antibiotics | Periodic CBC monitoring may be indicated during prolonged antibiotic therapy |
C80.1 | Malignant neoplasm without specification of site, with metastasis | CBC monitoring for cytopenias during cancer or its treatment |
O99.0 | Anemia complicating pregnancy, childbirth and the puerperium | CBC used routinely in prenatal care to evaluate maternal hemoglobin and hematocrit |
Z00.00 | Encounter for general adult medical examination without abnormal findings | CBC as part of routine preventive health screening |
Related CPT Codes
| CPT Code | Description | Relationship to This Procedure |
|---|---|---|
36415 | Collection of venous blood by venipuncture | Performed immediately prior to G0307 to obtain the specimen |
85025 | Blood count; complete (CBC), automated and automated differential WBC count | A CPT laboratory equivalent sometimes used in non-HCPCS billing environments for a full CBC including platelet count; complements G0307 when platelet count is required |
85027 | Blood count; automated RBC indices (MCV, MCH, MCHC) | Provides additional RBC indices that may be reported alongside the automated hemoglobin/hematocrit results in clinical workup |
85014 | Blood count; reticulocyte count | Often ordered after abnormal G0307 results to evaluate bone marrow response |
88112 | Cytopathology, smears, interpretation (e.g., peripheral blood smear) | Used when a peripheral smear review is required after abnormal CBC results from G0307 |