Summary & Overview
HCPCS G1002: Clinical Decision Support Mechanism (MedCurrent)
HCPCS Level II code G1002 designates the use of a clinical decision support mechanism (MedCurrent) under the Medicare Appropriate Use Criteria program. The code documents use of an electronic decision support tool that helps clinicians apply appropriateness criteria at the point of care, primarily in outpatient and ambulatory settings where imaging or procedural decisions are made. Nationally, such codes matter for aligning clinical workflows with policy-driven appropriateness programs and for consistent documentation of decision support use.
Key payers covered include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of the code's clinical intent, payer recognition, common modifiers, and guidance on typical site-of-service application. The publication summarizes benchmarking and coverage context where available and highlights policy considerations tied to appropriate use criteria implementation.
This analysis provides actionable reference material for coding, billing, and compliance teams, clinicians integrating decision support into care processes, and payer-contracting stakeholders seeking clarity on documentation expectations. Data not available in the input is noted where applicable.
Billing Code Overview
HCPCS Level II code G1002 represents a clinical decision support mechanism (MedCurrent) as defined by the Medicare Appropriate Use Criteria program. The code describes the provision or use of a computerized or electronic decision support tool that assists clinicians in applying appropriate use criteria at the point of care.
Service Type: Clinical decision support service
Typical Site of Service: Outpatient clinical settings and ambulatory care environments where imaging or procedure appropriateness determinations are made
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Clinical & Coding Specifications
Clinical Context
A 68-year-old male with a history of coronary artery disease and recurrent chest pain presents to the emergency department. The treating emergency physician orders a computed tomography coronary angiography and considers stress testing options. To comply with Medicare Appropriate Use Criteria (AUC) requirements, the facility uses the clinical decision support mechanism G1002 (MedCurrent) to query imaging appropriateness before ordering. The workflow: the ordering clinician enters the patient's clinical data and suspected diagnosis into the electronic health record; the EHR sends the query to the MedCurrent AUC platform; MedCurrent returns an appropriateness score and recommendation; the ordering clinician documents the AUC consultation result and proceeds with imaging or documents the clinical rationale for deviation. Typical site of service is hospital outpatient department or emergency department where imaging orders and AUC queries are performed as part of pre-authorization and quality assurance processes.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
22 | Increased procedural services | Use when the clinical decision support consultation required substantially greater effort or documentation than usual for the AUC query process |