G9314 HCPCS Reimbursement & Policy Benchmarks | OpenPayer

Summary & Overview

HCPCS G9314: Amoxicillin Not Prescribed as First-Line Antibiotic

HCPCS Level II code G9314 documents cases where amoxicillin, with or without clavulanate, was prescribed but not used as the first-line antibiotic at diagnosis and no rationale was provided. As a claims-level indicator of departure from guideline-preferred initial therapy, G9314 can affect utilization reviews, prior authorization triggers, and quality measurement. Nationally, the code matters for payers monitoring antibiotic stewardship, prescribing consistency, and medical necessity determinations.

Key payers included in this analysis are Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of what the code represents, typical sites of service, and the clinical context behind documenting non–first-line antibiotic selection. The publication summarizes common billing practices, expected use cases in ambulatory settings, and where G9314 may intersect with payer policies and utilization management.

This report provides practical benchmarks and policy context for clinicians, coding staff, and payers: how the code is used on claims, implications for antibiotic stewardship programs, and potential areas for documentation improvement. Data not available in the input is noted where applicable.

AetnaBlue Cross Blue ShieldCigna HealthUnitedHealthcareMedicareG9314HCPCS Level IIantibiotic stewardshipamoxicillinoutpatient prescribingurgent caremedical necessitydocumentation

Billing Code Overview

HCPCS Level II code G9314 indicates that amoxicillin, with or without clavulanate, was not prescribed as the first-line antibiotic at the time of diagnosis and no reason was given. This code documents deviation from first-line antibiotic selection for an acute infectious diagnosis when amoxicillin (with or without clavulanate) was selected instead of the expected first-line therapy.

Service type: Medication prescribing / outpatient antibiotic management
Typical site of service: Outpatient clinic, urgent care, emergency department, or other ambulatory care settings where an initial antibiotic is prescribed

Clinical & Coding Specifications

Clinical Context

A typical patient is an adult presenting to urgent care or a primary care clinic with signs of acute bacterial infection such as otitis media, sinusitis, acute exacerbation of chronic bronchitis, or uncomplicated skin and soft tissue infection. The clinician documents the diagnosis, assesses allergy history and prior antibiotic exposure, and prescribes an antibiotic. This code G9314 is used when the clinician prescribes amoxicillin or amoxicillin-clavulanate despite it not being the preferred first-line antibiotic at time of diagnosis and the medical record does not document a specific reason for selecting it. The workflow includes history and exam, decision to prescribe oral antibiotic, medication selection documented in the chart, and billing where G9314 denotes non–first-line antibiotic choice without recorded justification. Typical sites of service include outpatient clinics, urgent care centers, and primary care offices. A realistic scenario: a patient with acute bacterial sinusitis with prior recent antibiotic use is prescribed amoxicillin-clavulanate, but the chart lacks documentation explaining why an alternative to first-line therapy was chosen; G9314 captures that prescribing pattern for payor review and quality monitoring.

Coding Specifications

Modifier	Description	When to Use
`22`

HCPCS G0508: Telehealth Critical Care Consultation, Initial

HCPCS-G9385-HCV-SCREENING-DECLINED-DOCUMENTATION

HCPCS G9385: Documentation of Patient Reason for Not Receiving Annual HCV Screening

HCPCS-G0268-CERUMEN-REMOVAL-WITH-AUDIOLOGIC-TESTING

HCPCS G0268: Removal of Impacted Cerumen With Audiologic Testing

HCPCS-G9299-PREOPERATIVE-VTE-AND-CARDIOVASCULAR-RISK-NOT-EVALUATED

HCPCS G9299: Preoperative VTE and Cardiovascular Risk Not Evaluated

HCPCS-G9268-COMPLICATION-DOCUMENTATION-WITHIN-90-DAYS

HCPCS G9268: Documentation of Complications Within 90 Days

HCPCS-G0081-CARE-MANAGEMENT-HOME-VISIT-20MIN

HCPCS G0081: Brief Care Management Home Visit (20 minutes)

HCPCS-G0553-DIGITAL-MENTAL-HEALTH-TREATMENT-MANAGEMENT-20-MIN

HCPCS G0553: Digital Mental Health Treatment Management, First 20 Minutes

HCPCS-G8955-ASSESSMENT-ADEQUACY-VOLUME-MANAGEMENT

HCPCS G8955: Assessment of Adequacy of Volume Management

HCPCS-G2009-COMPREHENSIVE-IN-HOME-POST-DISCHARGE-VISIT

HCPCS G2009: Comprehensive 60-Minute In-Home Post-Discharge Visit

HCPCS-G9247-HIV-CARE-ENGAGEMENT-90-DAY-INTERVAL

HCPCS G9247: HIV Care Engagement Over 90-Day Interval

Showing 1–10 of 1996

Taxonomy Code	Specialty	Notes
207Q00000X	Family Medicine	Most common outpatient prescribers for acute infections and antibiotic selection.
207R00000X	Internal Medicine	Primary care physicians managing adult infections and prescriptions.
208D00000X	Emergency Medicine	Urgent care and ED clinicians who frequently prescribe antibiotics at initial presentation.
281T00000X	Physician Assistant	PAs commonly see acute infections in outpatient and urgent care settings and prescribe under supervision.
363A00000X	Nurse Practitioner	NPs provide primary and urgent care and commonly manage antibiotic therapy.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`J01.90`	Acute sinusitis, unspecified	Common indication for outpatient amoxicillin/amoxicillin-clavulanate; choice may deviate from first-line based on clinical factors.
`J02.9`	Acute pharyngitis, unspecified	Viral causes predominate, but bacterial pharyngitis may prompt antibiotic therapy; documentation of reason for non–first-line agent is relevant.
`H66.90`	Otitis media, unspecified, unspecified ear	Middle ear infections frequently lead to amoxicillin prescriptions; non–first-line use without reason is coded by `G9314`.
`J20.9`	Acute bronchitis, unspecified	Antibiotics are often not first-line but sometimes prescribed; amoxicillin use should be documented.
`L03.90`	Cellulitis, unspecified site	Skin and soft tissue infections where amoxicillin-clavulanate may be chosen; documentation should reflect rationale for non–first-line choice.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`99202`	Office or other outpatient visit for the evaluation and management of a new patient, typically 20 minutes	Used for initial outpatient encounters where diagnosis is made and antibiotic prescribed.
`99213`	Office or other outpatient visit for the evaluation and management of an established patient, typically 15 minutes	Common code for follow-up or routine visits where antibiotics are prescribed for acute infections.
`99283`	Emergency department visit for the evaluation and management of a patient, moderate severity	Used in ED/urgent care settings where antibiotic choice is made and medication is prescribed.
`99406`	Smoking and tobacco use cessation counseling, intermediate, 3-10 minutes	May be performed adjunctively during the visit when counseling that could affect infection risk or antibiotic decisions is provided.
`87070`	Culture, bacterial; any other source except blood, aerobic, with isolation and presumptive identification of isolates	Performed when clinicians obtain cultures to guide antibiotic selection; supports rationale for antibiotic choice.

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