Summary & Overview
HCPCS G8645: Intent to Report Asthma Measures Group
HCPCS Level II code G8645 designates the provider's intent to report the asthma measures group, a quality-reporting classification tied to asthma care metrics. This administrative code facilitates standardized capture of participation in asthma-related performance measurement programs, which supports population health monitoring and payer quality initiatives across the country. Use of G8645 matters nationally because consistent reporting enables aggregation of asthma quality data, informs value-based contracting, and supports public and private payer quality programs.
Key payers included in this overview are Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise explanation of what the code represents, the clinical and administrative context for its use, and the types of benchmarks and policy topics typically associated with measure-group reporting. The publication outlines common reporting practices, typical service settings, and the relevance of G8645 to quality measurement workflows. Where specific data elements (modifiers, taxonomies, ICD-10 mappings, related codes, and service line details) were not provided in the input, the text notes that those items are not available and omits them from analysis. The audience will gain a clear, practical understanding of the code’s role in asthma quality reporting and what to expect when encountering G8645 on administrative submissions.
Billing Code Overview
HCPCS Level II code G8645 is used when a provider indicates an intent to report the asthma measures group. The description denotes an administrative reporting classification tied to quality measurement for patients with asthma.
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Service type: Quality reporting/measure group reporting
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Typical site of service: Administrative/ambulatory clinical settings where quality measurement and reporting for asthma occur
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Clinical & Coding Specifications
Clinical Context
A typical patient is a school-age child or adult with a diagnosis of persistent asthma presenting to a primary care clinic or outpatient pulmonary clinic for performance or reporting of asthma quality measures. The patient has a history of asthma with routine follow-up to review control, symptoms, medication adherence, inhaler technique, and smoking or allergen exposures. The clinical workflow includes triage and vital signs review, assessment by a nurse who documents symptom frequency and peak flow if available, medication reconciliation, provider visit with focused asthma review, confirmation of an active asthma diagnosis, documentation of controller medication use or reason for not prescribing, patient education and inhaler technique check, and recording of measure compliance in the electronic health record for reporting under the asthma measures group represented by G8645. Typical sites of service are outpatient primary care offices, pediatric offices, family medicine clinics, and outpatient pulmonary clinics. Typical patient scenario: a 12-year-old with moderate persistent asthma attends a scheduled follow-up visit for asthma control; the clinician documents the diagnosis, reviews controller therapy (e.g., inhaled corticosteroid), assesses symptom control and rescue inhaler use, provides inhaler education, and captures data elements required for reporting the asthma measure group G8645 in the EHR or claims submission.
Coding Specifications
| Modifier | Description | When to Use |
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