G2192 HCPCS: Head Imaging Reimbursement

HCPCS Level II code G2192 designates diagnostic imaging of the head for patients over 55 years old who present with temporal headaches. This code captures clinically indicated head imaging intended to evaluate new, worsening, or otherwise concerning temporal headache symptoms in older adults — a population at higher risk for secondary causes that may require urgent evaluation. Nationally, accurate use of G2192 supports appropriate resource allocation in emergency departments, outpatient imaging centers, and hospital radiology services.

Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of the clinical context for imaging in older adults with temporal headaches, documentation considerations tied to clinical indications, and typical sites of service where the code is billed. The publication also outlines benchmarking and coverage considerations where available and highlights common modifier usage patterns when reported.

The content is intended for revenue cycle leaders, coding and compliance staff, radiology administrators, and clinicians who need a clear, national-level summary of the code’s clinical meaning, billing context, and operational implications. Data not provided in the source input is noted where applicable.

Billing Code Overview

HCPCS Level II code G2192 describes imaging for patients with clinical indications for head imaging due to temporal headaches in patients over 55 years of age. The service is focused on diagnostic imaging of the head prompted by new or concerning temporal headache symptoms in older adults.

Service Type: Diagnostic head imaging for temporal headaches

Typical Site of Service: Outpatient imaging centers, hospital radiology departments, and emergency departments

Data not available in the input.

Clinical Context

A 62-year-old patient presents to the emergency department with a new-onset, severe temporal headache that began suddenly and is described as different from prior headaches. The clinician performs a focused history and neurologic exam, documents red-flag features (age >55, sudden onset, focal neurologic signs, or change from baseline), and determines that neuroimaging of the head is clinically indicated to evaluate for acute intracranial pathology (for example, intracranial hemorrhage, mass lesion, or ischemic stroke). The patient is transported to radiology where a non-contrast CT head is performed as the initial imaging study. The clinical workflow includes order entry with indication, pre-imaging screening (allergies, pregnancy status), performance of the CT by radiology technologists, provisional image review by the radiologist, and final radiology interpretation documented in the medical record. Billing for the imaging indication is captured with G2192 to denote patients over 55 with temporal headaches requiring head imaging; appropriate CPT imaging codes for the CT or MRI study are reported separately by the performing facility/provider.

Coding Specifications

Modifier	Description	When to Use
`22`	Increased procedural services	Use when work required for imaging interpretation or associated procedure is substantially greater than typical and documentation supports increased complexity.

Taxonomy Code	Specialty	Notes
`2080P0208X`	Diagnostic Radiology	Primary specialty performing and interpreting head CT/MRI studies.
`207RC0000X`	Emergency Medicine	Common ordering specialty in ED presentations of acute temporal headache in patients >55.
`207L00000X`	Neurology	Possible ordering/interpreting specialty for outpatient acute headache evaluation and follow-up.
`2084P0800X`	Interventional Radiology	Relevant if image-guided interventions are required based on imaging findings.
`364S00000X`	Radiology Assistant	Support role in imaging performance and workflow.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`R51`	Headache	Common presenting symptom prompting head imaging for new or atypical headache.
`G44.1`	Vascular headache, not elsewhere classified (migraine)	Headache subtype considered in differential; imaging may be used to exclude secondary causes in older patients.
`I63.9`	Cerebral infarction, unspecified	Imaging assesses for ischemic stroke in acute presentations with focal deficits.
`I61.9`	Nontraumatic intracerebral hemorrhage, unspecified	Imaging (non-contrast CT) is required to identify intracranial hemorrhage in sudden severe headache.
`G44.89`	Other headache syndromes	Other headache types that may warrant imaging when presentation is atypical or in older patients.
`C71.9`	Malignant neoplasm of brain, unspecified	Imaging may detect mass lesions presenting with new or changing headaches.
`G93.1`	Anoxic brain damage, not elsewhere classified	Imaging may be performed to evaluate brain injury in relevant clinical contexts.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`70450`	CT head/brain without contrast	Common initial imaging study for evaluation of acute temporal headache to assess for hemorrhage or mass.
`70460`	CT head/brain with contrast	Used when contrast-enhanced CT is indicated after initial non-contrast study or for specific differential considerations.
`70551`	MRI brain without contrast	Alternative cross-sectional imaging when MRI is preferred or required for soft-tissue detail, subacute ischemia, or other indications.
`70553`	MRI brain without and with contrast	Used when both non-contrast and contrast-enhanced MRI sequences are performed in the same session.
`74177`	CT abdomen and pelvis with contrast (example of additional imaging)	Occasionally performed if systemic symptoms suggest extracranial source; included here as a commonly performed ancillary study when indicated.

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Summary & Overview

HCPCS G2192: Head Imaging for Temporal Headaches in Patients Over 55