CurrentAetnaPolicy 0019

Holter Monitors

Clinical policy bulletin describing medical necessity, limitations, coding, and background evidence for ambulatory Holter electrocardiographic monitoring; applies to Aetna members and providers requesting coverage for Holter monitoring.

Policy Summary

PayerAetna

PolicyHolter Monitors

Policy CodePolicy 0019

Change TypeNo material change

Effective Date

Next Review Date

Key ActionOrder Holter monitoring only when indications in the policy are met and limit use to no more than twice in six months; consider event recorders if longer or more frequent monitoring is required.

SourceLink

POLICY UPDATE CHANGES

No material clinical or coverage changes in this revision.

24-48htypical Holter monitoring duration

≤2/6morecommended frequency limit

48hnot medically necessary >

0019policy

Coverage Criteria for Holter Monitoring

Medical Necessity Indications

Covered when ANY of the following indications are present

Medical necessity indications: 1. Assessment of efficacy of medications for arrhythmia treatment; or 2. Assessment of efficacy of surgical interventions for the treatment of arrhythmia; or 3. Autonomic cardiac neuropathy associated with diabetes mellitus; or 4. Idiopathic hypertrophic or dilated cardiomyopathy; or 5. Evaluation of possible or documented long QT syndrome; or 6. Assessment of the function of pacemakers or implantable cardioverter defibrillators; or 7. Individuals with pain suggestive of variant (Prinzmetal's) angina; or 8. Post myocardial infarction with left ventricular dysfunction; or 9. Evaluation of symptoms related to cardiac arrhythmias (e.g., palpitations, syncope or near syncope, unexplained dizziness); or 10. Asymptomatic congenital complete atrioventricular (AV) block in pediatric patients.

Indications per policy

Limitations

Restrictions and comparative guidance

Frequency and duration limits: Holter monitoring is generally considered medically necessary no more frequently than twice in a six month time period

Policy Summary

PayerAetna

PolicyHolter Monitors

Policy CodePolicy 0019

Change TypeNo material change

Effective Date

Next Review Date

SourceLink

On This Page

Trek Health ingests and normalizes Transparency in Coverage data and payer policy updates to give provider organizations a clear view of how commercial reimbursement behaves across markets, payers, and services. Our platform transforms raw payer disclosures into structured intelligence that supports contract evaluation, payer negotiations, and service line strategy. By combining market benchmarks with ongoing policy visibility, Trek helps teams identify variability, risk, and opportunity in commercial reimbursement. The result is faster insight, stronger negotiating positions, and more informed financial decisions.

Routine performance of Holter monitoring during sleep studies for suspected obstructive sleep apnea is not supported by evidence of clinical benefit. The policy specifically notes that routine Holter monitoring has no proven benefit for individuals undergoing sleep studies for suspected obstructive sleep apnea, and related sleep-disorder ICD-10 codes are listed as not covered in that clinical context.

When evaluating requests that include a concurrent sleep study, confirm the clinical indication for ambulatory ECG monitoring and document how Holter monitoring will alter management beyond the sleep evaluation. If Holter monitoring is being requested for one of the policy's covered cardiac indications (e.g., evaluation of palpitations, syncope, arrhythmia assessment), justify that indication separately from the sleep study.

The policy states that Holter monitoring lasting more than 48 hours is generally considered not medically necessary. Requests for monitoring beyond this duration should include documentation explaining why standard 24–48 hour ambulatory recording is insufficient and why an alternative (for example, a cardiac event recorder per CPB 0073) is not appropriate.

In addition to the duration limit, Holter monitoring is generally considered medically necessary no more frequently than twice in a six month period. Monitoring beyond those frequency or duration limits carries a risk of coverage denial unless a clear, covered indication and clinical justification are provided.

Coding and Billing

Covered CPT Codes (if selection criteria met)CPTCovered

93224	External electrocardiographic monitoring up to 48 hours by continuous rhythm recording and storage; includes recording, scanning analysis with report, physician review and interpretation.
93225	Recording (includes connection, recording, and disconnection).
93226	Scanning analysis with report.
93227	Physician review and interpretation.

HCPCS / Devices considered experimentalHCPCSExperimental

Empatica E4 wristband

Empatica E4 Wristband (no specific HCPCS code listed)

ICD-10 Codes covered if selection criteria are metICD-10Covered

E10.40 - E10.49 E10.610 E11.40 - E11.49 E11.610	Diabetes mellitus with neurological complications.
F45.8	Other somatoform disorders.
G45.0 - G45.1 G45.8 - G45.9	Transient cerebral ischemic attacks and related syndromes.
G99.0	Autonomic neuropathy in diseases classified elsewhere.
I20.0 - I20.1 I21.01 - I22.9 I24.0 - I24.9 I25.2	Ischemic heart diseases.
I21.A1	Myocardial infarction type 2.
I21.A9	Other myocardial infarction type.
I42.0 - I42.2 I42.5 I42.8 - I42.9	Cardiomyopathy.
I44.0 - I44.7	Atrioventricular and left bundle-branch block.
I45.0 - I45.9	Other conduction disorders.

1–10 of 22

1/3

ICD-10 Codes not covered in context of sleep study for suspected OSAICD-10Not Covered

F51.01 - F51.9	Sleep disorders not due to a substance or known physiological condition [not covered if undergoing sleep studies for suspected obstructive sleep apnea].
G47.00 - G47.39 G47.50 - G47.9	Sleep disorders [not covered if undergoing sleep studies for suspected obstructive sleep apnea].
R06.00 - R06.09 R06.81 R06.83 - R06.89	Dyspnea and other abnormalities of breathing [not covered if undergoing sleep studies for suspected obstructive sleep apnea].

Monitoring duration threshold

Monitoring duration threshold> 48 hours (Holter monitoring lasting more than 48 hours is generally considered not medically necessary)

Frequency limitNo more than twice in a 6-month period

Alternate option when prolonged monitoring neededConsider cardiac event recorders (see CPB 0073)

Provider Actions, Prior Authorization, and Documentation

Prior Authorization

Prior authorization / coverage coding

CPT codes 93224, 93225, 93226, and 93227 are covered when the policy's clinical selection criteria are met. Prior authorization requirements are governed by the member's specific plan; check plan benefits for any prior auth or coverage limits before billing.

Covered CPT: 93224, 93225, 93226, 93227 (when selection criteria met)
Prior authorization governed by the member's plan benefits — verify prior auth requirements

Documentation Required

Coverage contingent on plan provisions

Clinical Policy Bulletins provide guidance to assist in administering plan benefits but represent only a partial description of plan or program benefits and do not guarantee coverage. Coverage and prior authorization determinations may vary by the member's specific plan provisions.

CPBs do not constitute offers of coverage or medical advice
Coverage contingent on the member's specific plan provisions

Documentation Required

Correlate Holter recording with patient activity diary

Correlate the Holter recording with a patient activity diary. The recording should be analyzed and a report generated for physician review to link symptoms or activities with the recorded rhythm findings.

Ensure patient maintains an activity/symptom diary during monitoring
Provide analyzed report for physician review and documentation

Billing Rule

Frequency limits and alternative monitoring

Holter monitoring is generally considered medically necessary no more frequently than twice in a six-month period, and monitoring lasting more than 48 hours is generally considered not medically necessary. If more frequent or extended monitoring is needed to evaluate arrhythmias, consider cardiac event recorders per CPB 0073 and provide additional clinical justification when requesting exceptions.

Holter monitoring: generally ≤ 2 times per 6 months
Monitoring > 48 hours: generally not medically necessary
If more frequent/longer monitoring needed: consider cardiac event recorders (CPB 0073) and submit clinical justification

Documentation Required

Provider responsibility and documentation

Treating providers are solely responsible for medical advice and treatment; Clinical Policy Bulletins assist in administering plan benefits but are not a substitute for clinical judgment. Ensure documentation supports the medical necessity of Holter monitoring ordered.

Provider responsibility for medical treatment and documentation
Document clinical indications and rationale when ordering Holter monitoring

Note

When Holter is insufficient

If more frequent monitoring than a Holter is needed to evaluate arrhythmias, consider cardiac event recorders per CPB 0073.

Consider cardiac event recorders for monitoring needs beyond Holter capabilities
Reference CPB 0073 for details

Prior Authorization

Provider actions — submit justification for exceptions

Providers should ensure any request for monitoring beyond policy limits includes clear clinical justification tied to member-specific plan provisions to support coverage consideration.

Requests for monitoring more frequently than policy limits require additional justification
Verify member's plan provisions that may affect coverage

Background and Clinical Context

A Holter monitor is a self-contained ambulatory recording device that captures continuous electrocardiographic measurements typically over a period of 24 to 48 hours. It provides continuous rhythm recording, scanning analysis with report, and physician review and interpretation when performed per the policy's coding descriptions.

Holter monitoring is distinct from ambulatory event monitors, which record episodic ECG data over longer intervals (up to one month) and are used when symptoms are infrequent or when extended monitoring is needed. The policy indicates that if more frequent or prolonged monitoring is required to evaluate arrhythmias, consideration should be given to cardiac event recorders (see CPB 0073).

Definitions

Holter monitor

DefinitionSelf-contained ambulatory and recording device used to capture continuous electrocardiographic measurements over a period of 24 to 48 hours.

Typical recording methodElectrodes on chest attached to a battery-operated monitor carried by patient with activity diary; continuous ECG recorded (usually 24 hours) and analyzed.

DistinctionDistinct from ambulatory event monitors which capture episodic data over longer periods (up to 1 month).

Ambulatory event monitor

DefinitionDevice that captures episodic electrocardiographic data over longer periods (up to 1 month) and is distinct from Holter monitors.

Use caseUsed when longer-term intermittent event capture is needed rather than continuous short-term monitoring.

Duration comparisonAmbulatory event monitors: up to 1 month vs Holter monitors: 24–48 hours.

Sudden cardiac death composite (as used in Gamet et al. 2019)

Components of compositeIncludes sudden cardiac death, aborted sudden cardiac death, implantable cardioverter defibrillator therapy, sustained ventricular tachycardia, atrio-ventricular (AV) block grade 3, or pause > 3 seconds.

Study contextUsed as a secondary end-point in Gamet et al. (2019) retrospective study of patients with type 1 myotonic dystrophy.

PurposeDefined to capture major arrhythmic and abrupt conduction-related events representing sudden cardiac death risk.

Cardiovascular events composite (as used in Gamet et al. 2019)

Components of compositeIncludes all-cause mortality, pacemaker or cardioverter defibrillator implantation, sustained ventricular tachycardia, supraventricular tachycardia, hospitalization for acute cardiac cause, and heart failure.

Study contextUsed as a secondary end-point in Gamet et al. (2019) retrospective study of patients with type 1 myotonic dystrophy.

PurposeCaptures a broader set of cardiovascular outcomes beyond sudden death for event-rate assessment.