Summary & Overview

HCPCS G4011: Internal Medicine MIPS Specialty Set

HCPCS Level II code G4011 designates the Internal Medicine MIPS specialty set, signifying quality measurement and reporting activities tied to internal medicine clinicians participating in the Merit-based Incentive Payment System. This code matters nationally because MIPS performance influences clinician payment adjustments and public reporting, shaping practice revenue and quality incentives across the outpatient internal medicine landscape. Key payers included in this analysis are Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will learn the clinical and administrative context of the code, which payers recognize it, and the types of benchmarks and policy considerations that affect internal medicine MIPS reporting. The publication summarizes how G4011 fits into practice workflows in ambulatory settings, outlines expected sites of service, and highlights where data is available versus not provided. It also reviews common operational implications for billing and coding teams, and the policy environment that makes this code relevant to nationwide quality reporting and payment programs. Data not available in the input is noted where applicable.

AetnaBlue Cross Blue ShieldCigna HealthUnitedHealthcareMedicareG4011HCPCS Level IIInternal MedicineMIPSQuality ReportingAmbulatory CarePerformance MeasurementBilling Code

Billing Code Overview

HCPCS Level II code G4011 represents the Internal Medicine MIPS specialty set, a classification used to identify quality reporting and performance measurement activities for internal medicine clinicians under the Merit-based Incentive Payment System (MIPS). This billing code denotes services and reporting elements associated with internal medicine providers participating in MIPS.

Service type: Quality measurement and reporting activities for internal medicine
Typical site of service: Outpatient internal medicine clinics, ambulatory care settings, and other ambulatory practice locations where internal medicine clinicians provide longitudinal care

Data not available in the input.

Clinical & Coding Specifications

Clinical Context

A 68-year-old patient with multiple chronic conditions (hypertension, type 2 diabetes, and chronic obstructive pulmonary disease) attends an outpatient primary care visit with an internal medicine physician participating in MIPS (Merit-based Incentive Payment System). The visit includes a comprehensive medication review, chronic disease management, and documentation of quality measures specific to the internal medicine MIPS specialty set. The clinician completes required electronic quality measure reporting elements and documents performance measures such as hypertension control, diabetes HbA1c management, medication reconciliation, and preventive screenings. Billing uses the HCPCS Level II code G4011 to indicate services tied to the internal medicine MIPS specialty set when reporting performance measure-related activities during the encounter. Typical workflow: patient check-in and vitals, focused history and medication reconciliation, problem-focused and/or chronic care management visit with documentation of MIPS measure data elements, electronic submission of quality data to the reporting registry, and final billing with appropriate modifiers appended as needed for session specifics (e.g., unusual services, split/shared services, or assistant at surgery status where applicable). Typical site of service is outpatient clinic or physician office where internal medicine clinicians deliver visits and report MIPS quality measures.

Coding Specifications

Modifier	Description	When to Use
`22`	Increased procedural services	Use when services are substantially greater than usual for the primary service and documentation supports increased work.
`23`	Unusual anesthesia	Use when a procedure normally done with local anesthesia required general anesthesia because of medical condition or complication.
`52`	Reduced services	Use when a service is partially reduced or eliminated at physician discretion; document reason for reduction.
`53`	Discontinued procedure	Use when a procedure is started but discontinued due to extenuating circumstances or patient condition.
`54`	Surgical care only	Use to indicate the surgeon performed only the surgical portion when separate billing for postoperative care applies.
`55`	Postoperative management only	Use when only postoperative care is billed by a physician other than the surgeon.
`56`	Preoperative management only	Use when only preoperative care is billed by a physician other than the surgeon.
`62`	Two surgeons	Use when two surgeons work together as primary surgeons performing distinct portions of a procedure.
`AS`	Physician assistant, nurse practitioner, or clinical nurse specialist services for assistant at surgery	Use when an advanced practice clinician acts as assistant at surgery.
`CO`	Skilled nursing facility (SNF) consolidated billing not applicable	Use when services are paid separately outside of SNF consolidated billing rules.
`CQ`	Service furnished using telehealth originating site facility outside the originating site facility fee	Use when services are furnished via telehealth under specific contractor rules.
`FX`	Physically unattainable laboratory test	Use to indicate specimen collection or testing could not be performed for physical reasons.
`QK`	Medical direction of two, three, or four concurrent anesthesia procedures involving qualified individuals	Use when the physician medically directs multiple concurrent anesthesia procedures.
`QX`	Qualified non-physician anesthetist with medical direction by a physician	Use when services are provided by a CRNA with physician medical direction.

Taxonomy Code	Specialty	Notes
`207R00000X`	Internal Medicine	Primary specialty for clinicians reporting the internal medicine MIPS specialty set.
`207RP3000X`	Hospice and Palliative Medicine	Internal medicine physicians who provide palliative care and report related quality measures.
`207T00000X`	Geriatric Medicine	Internal medicine subspecialists focused on older adults commonly reporting geriatric-related measures.
`207L00000X`	Preventive Medicine	Physicians focused on preventive services and population health measures within MIPS.
`208000000X`	Family Medicine	Primary care clinicians who may also report internal medicine MIPS-aligned quality measures in some settings.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`I10`	Essential (primary) hypertension	Hypertension control is a common internal medicine MIPS quality measure and frequently documented in visits tied to `G4011`.
`E11.9`	Type 2 diabetes mellitus without complications	Diabetes management and HbA1c control are core MIPS measures relevant to internal medicine reporting.
`J44.9`	Chronic obstructive pulmonary disease, unspecified	COPD management and smoking cessation counseling are often included in primary care quality reporting.
`E78.5`	Hyperlipidemia, unspecified	Lipid management and statin therapy are typical measures tracked in internal medicine MIPS sets.
`Z79.899`	Other long term (current) drug therapy	Documentation of ongoing medications and reconciliation is part of MIPS medication safety measures.

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	Common E/M code for follow-up visits where internal medicine MIPS measures are documented and reported during routine chronic disease management.
`99214`	Office or other outpatient visit for the evaluation and management of an established patient, typically 25 minutes	Used for more complex visits requiring moderate to high medical decision making and detailed documentation of MIPS quality measures.
`99490`	Chronic care management services, at least 20 minutes of clinical staff time directed by a physician or other qualified health care professional, per calendar month	May be performed alongside MIPS reporting to manage patients with multiple chronic conditions and to capture care coordination elements relevant to quality measures.
`99457`	Remote physiologic monitoring treatment management services, 20 minutes or more of clinical staff/physician/other qualified health care professional time in a calendar month	Used when remote monitoring data contributes to MIPS quality measure reporting and disease control metrics.
`G0439`	Annual wellness visit, includes a personalized prevention plan of service (PPPS), subsequent	Preventive visit where documentation of preventive care quality measures relevant to internal medicine MIPS specialty set may be recorded.