Summary & Overview

HCPCS G9664: Statin Therapy User or Statin Prescription

HCPCS Level II code G9664 documents patients who are current statin therapy users or who received an order for statin therapy. The code is used in ambulatory and outpatient clinical settings to capture medication use or prescribing activity related to statins, a cornerstone therapy for lipid management and cardiovascular risk reduction. Accurate use of G9664 supports quality measurement, care coordination, and appropriate claims documentation nationwide.

Key payers in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find concise benchmarks and context for how G9664 is applied across outpatient and primary care settings, plus discussion of clinical implications for documentation and coding consistency. The report covers typical use cases, sites of service, and how this code fits into broader statin therapy monitoring and quality reporting. Data not available in the input is noted where applicable.

AetnaBlue Cross Blue ShieldCigna HealthUnitedHealthcareMedicareG9664HCPCS Level IIstatin therapymedication managementoutpatient codingquality measurementlipid managementcardiovascular prevention

Billing Code Overview

HCPCS Level II code G9664 indicates patients who are currently statin therapy users or who received an order (prescription) for statin therapy. This code represents documentation that a patient is on or has been prescribed statin medication as part of lipid-lowering management.

Service type: Medication management / prescription documentation

Typical site of service: Outpatient clinics, primary care offices, cardiology practices, and other ambulatory care settings where statin therapy is prescribed or managed.

Clinical & Coding Specifications

Clinical Context

A typical patient is a 62-year-old adult with established atherosclerotic cardiovascular disease (ASCVD) or multiple risk factors, currently prescribed statin therapy. The patient presents to an outpatient primary care or cardiology clinic for a medication reconciliation and cardiovascular risk assessment visit. The clinician documents current statin use or issues a new statin order after reviewing lipid panel results, liver function tests, concurrent medications, and patient tolerance. Typical workflow: intake staff confirm current medications; nurse obtains vitals and recent labs; clinician reviews indications (for example, secondary prevention after myocardial infarction or primary prevention with diabetes), discusses benefits and risks of statin therapy, documents shared decision-making and adherence counseling, and places or renews the statin prescription in the EHR. Billing staff assign G9664 to indicate the patient is a current statin therapy user or received a statin order. Typical sites of service include outpatient clinic, cardiology practice, and primary care offices. Scenarios may also occur during transitional care visits after hospital discharge for acute coronary syndrome where statin therapy is confirmed or initiated.

Coding Specifications

Modifier	Description	When to Use
`22`	Increased procedural services	When documentation supports substantially greater work than typical for the visit where statin therapy management required significant additional effort (rare for this code).
`23`	Unusual anesthesia	Not typically applicable; included only if unrelated anesthesia was provided during an associated procedure.
`52`	Reduced services	When the visit or service to address statin therapy was partially reduced and not completed as originally planned.
`53`	Discontinued procedure	When a planned visit or service related to statin therapy was started but terminated for patient-related reasons.
`54`	Surgical care only	Not routinely applicable to medication management; used if separate surgical care is billed elsewhere.
`55`	Postoperative management only	Not typically applicable; used when only postoperative care is provided and medication management is part of that care.
`56`	Preoperative management only	When statin therapy was addressed solely during preoperative clearance visit.
`62`	Two surgeons	Uncommon; used if two physicians of the same specialty share responsibility for complex perioperative medication management.
`AS`	Non‑participating anesthesiologist	Not commonly used for this code; included among modifiers provided.
`CO`	Cast or splint	Not applicable clinically but listed among available modifiers.

Taxonomy Code	Specialty	Notes
`207Q00000X`	Cardiology	Cardiology clinicians commonly manage statin initiation and titration for ASCVD.
`207P00000X`	Internal Medicine	Primary care physicians manage long-term statin therapy for primary and secondary prevention.
`208D00000X`	Family Medicine	Family medicine clinicians oversee preventive care including statin prescribing and adherence counseling.
`363L00000X`	Nurse Practitioner	Nurse practitioners in primary care and cardiology commonly manage and prescribe statins.
`207K00000X`	Geriatric Medicine	Geriatricians manage lipid therapy in older adults with attention to comorbidities and polypharmacy.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`E78.5`	Hyperlipidemia, unspecified	Primary indication for initiation or continuation of statin therapy to lower LDL cholesterol.
`I25.10`	Atherosclerotic heart disease of native coronary artery without angina pectoris	Secondary prevention indication for statin therapy after diagnosis of coronary artery disease.
`I21.3`	ST elevation (STEMI) myocardial infarction of unspecified site	Statin therapy is standard of care after acute MI; documentation of use or initiation is relevant.
`E10.9`	Type 1 diabetes mellitus without complications	Diabetes is a major risk factor prompting statin therapy for primary prevention in adults.
`E11.9`	Type 2 diabetes mellitus without complications	Common comorbidity that influences statin prescribing for cardiovascular risk reduction.
`I63.9`	Cerebral infarction, unspecified	History of ischemic stroke is an indication for secondary prevention with statins.
`I50.9`	Heart failure, unspecified	Patients with heart failure often require careful medication reconciliation including statins when indicated.
`Z79.899`	Other long term (current) drug therapy	Used to indicate long-term current statin therapy status in the medical record.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`99213`	Office or other outpatient visit for the evaluation and management of an established patient, typically 15 minutes	Commonly billed for follow-up visits where statin therapy is reviewed or prescriptions renewed.
`99214`	Office or other outpatient visit for the evaluation and management of an established patient, typically 25 minutes	Used when medication management and counseling about statin therapy require moderate complexity and time.
`80061`	Lipid panel (total cholesterol, HDL, LDL, triglycerides)	Often ordered before or after initiating or adjusting statin therapy to monitor response.
`84443`	Assay of thyroid stimulating hormone (TSH)	Sometimes ordered as part of evaluation of secondary causes of dyslipidemia when adjusting therapy.
`93000`	Electrocardiogram, routine ECG with at least 12 leads; with interpretation and report	May be performed in cardiovascular risk assessment visits where statin therapy is being considered or managed.