DRAFT LCD Reference Article Billing and Coding Article

Billing and Coding: Temporary Nontherapeutic Ambulatory Cardiac Monitoring Devices

DA60279

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Draft Article
Draft Articles are works in progress and not necessarily a reflection of the current billing and coding practices. Revisions to codes are carefully and thoroughly reviewed and are not intended to change the original intent of the LCD.

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Source Article ID
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Draft Article ID
DA60279
Original ICD-9 Article ID
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Draft Article Title
Billing and Coding: Temporary Nontherapeutic Ambulatory Cardiac Monitoring Devices
Article Type
Billing and Coding
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CPT codes, descriptions, and other data only are copyright 2025 American Medical Association. All Rights Reserved. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein. CPT is a registered trademark of the American Medical Association.

Current Dental Terminology © 2025 American Dental Association. All rights reserved.

Copyright © 2025, the American Hospital Association, Chicago, Illinois. Reproduced with permission. No portion of the AHA copyrighted materials contained within this publication may be copied without the express written consent of the AHA. AHA copyrighted materials including the UB‐04 codes and descriptions may not be removed, copied, or utilized within any software, product, service, solution, or derivative work without the written consent of the AHA. If an entity wishes to utilize any AHA materials, please contact the AHA at ub04@aha.org or 312‐422‐3366.

Making copies or utilizing the content of the UB‐04 Manual, including the codes and/or descriptions, for internal purposes, resale and/or to be used in any product or publication; creating any modified or derivative work of the UB‐04 Manual and/or codes and descriptions; and/or making any commercial use of UB‐04 Manual or any portion thereof, including the codes and/or descriptions, is only authorized with an express license from the American Hospital Association. The American Hospital Association (the "AHA") has not reviewed, and is not responsible for, the completeness or accuracy of any information contained in this material, nor was the AHA or any of its affiliates, involved in the preparation of this material, or the analysis of information provided in the material. The views and/or positions presented in the material do not necessarily represent the views of the AHA. CMS and its products and services are not endorsed by the AHA or any of its affiliates.

CMS National Coverage Policy

Title XVIII of the Social Security Act (SSA), 1862(a)(1)(A), states that no Medicare payment shall be made for items or services that “are not reasonable and necessary for the diagnosis or treatment of illness or injury or to improve the functioning of a malformed body member.”

Title XVIII of the Social Security Act section 1862 (a) (1) (D). This section states that no Medicare payment may be made under part A or part B for any expenses incurred for items or services that are investigational or experimental.

Title XVIII of the Social Security Act, 1862(a)(7) and 42 Code of Federal Regulations, Section 411.15, exclude routine physical examinations.

Section 1842(n)(1) of the Social Security Act (the Act) establishes payment rules for certain diagnostic tests (other than clinical diagnostic laboratory tests) where the physician performing or supervising the test does not share a practice with the billing physician or other supplier.

Title XVIII of the Social Security Act, 1833(e), prohibits Medicare payment for any claim lacking the necessary documentation to process the claim.

Section 4317(b), of the Balanced Budget Act (BBA) of 1997, specifies that referring physicians are required to provide diagnostic information to the testing entity at the time the test is ordered.

The Code of Federal Regulations (CFR), 42 CFR 410.32, specifies that all diagnostic tests “must be ordered by the physician who is treating the beneficiary.”

42 CFR, Section 411.15(k)(1) states any services that are not reasonable and necessary are excluded from coverage.

CMS Publication 100-02, Medicare Benefit Policy, Chapter 1: Inpatient Hospital Services, §50.

CMS Publication 100-02, Medicare Benefit Policy, Chapter 6: Hospital Services Covered Under Part B, §10 and §20.3.

CMS Manual System, Pub. 100-02, Medicare Benefit Policy Manual, Chapter 15, §80.6.1; Requirements for Ordering and Following Orders for Diagnostic Tests and Definitions.

CMS Manual System, Pub. 100-02, Medicare Benefit Policy Manual, Chapter 15, §80, Requirements for Diagnostic X-Ray, Diagnostic Laboratory and other Diagnostic Tests sets forth the various levels of physician supervision required for diagnostic tests.

CMS Publication 100-02, Medicare Benefit Policy, Chapter 16: Laboratory Services From Independent Labs, Physicians, and Providers, §10.

CMS Manual System, Pub 100-03, National Coverage Determinations, Part 1: 20.15 Coverage for electrocardiographic services under Medicare Part B. This section sets out a framework for covered ambulatory electrocardiographic services.

CMS Manual System Pub. 100-03 National Coverage Determinations Transmittal 26: Electrocardiographic Services

CMS Manual System, Pub. 100-04, Medicare Claims Processing Manual, Chapter 12, §30.6.6.B, clarifies coverage for preoperative evaluations.

CMS Manual System, Pub.100.04, Medicare Claims Processing Manual, Chapter 32, §§140.1, 140.1.1, 140.2, 140.2.2.1, 140.2.2.3, 140.2.2.4, 140.2.2.5, 140.2.2.6, 140.3, 140.3.1., Cardiac Rehabilitation.

Article Guidance

Article Text

The billing and coding information in this article is dependent on the coverage indications, limitations and/or medical necessity described in the associated Temporary nontherapeutic ambulatory cardiac monitoring devices (TNACMD) LCD DL40255. Please refer to the LCD for reasonable and necessary requirements.

Guidelines
The HCPCS/CPT code(s) may be subject to Correct Coding Initiative (CCI) edits. This information does not take precedence over CCI edits. Please refer to CCI for correct coding guidelines and specific applicable code combinations prior to billing Medicare.

The documentation in the progress notes must reflect medical necessity for the service.

General Guidelines for Claims submitted to Part A or Part B MAC:

Procedure codes may be subject to National Correct Coding Initiative (NCCI) edits or OPPS packaging edits. Refer to NCCI and OPPS requirements prior to billing Medicare. For services requiring a referring/ordering physician, the name and NPI of the referring/ordering physician must be reported on the claim. A claim submitted without a valid ICD-10-CM diagnosis code will be returned to the provider as an incomplete claim under Section 1833(e) of the Social Security Act. The diagnosis code(s) must best describe the patient's condition for which the service was performed. For diagnostic tests, report the result of the test if known; otherwise, the symptoms prompting the performance of the test should be reported.

Advance Beneficiary Notice of Non-coverage (ABN) Modifier Guidelines

An ABN may be used for services which are likely to be non-covered, whether for medical necessity or for other reasons. Refer to CMS Publication 100-04, Medicare Claims Processing Manual, Chapter 30, for complete instructions.

Effective from April 1, 2010, non-covered services should be billed with modifier –GA, -GX, -GY, or –GZ, as appropriate.

The –GA modifier (“Waiver of Liability Statement Issued as Required by Payer Policy”) should be used when physicians, practitioners, or suppliers want to indicate that they anticipate that Medicare will deny a specific service as not reasonable and necessary and they do have an ABN signed by the beneficiary on file. Modifier GA applies only when services will be denied under reasonable and necessary provisions, sections 1862(a)(1), 1862(a)(9), 1879(e), or 1879(g) of the Social Security Act. Effective April 1, 2010, Part A MAC systems will automatically deny services billed with modifier GA. An ABN, Form CMS-R-131, should be signed by the beneficiary to indicate that he/she accepts responsibility for payment. The -GA modifier may also be used on assigned claims when a patient refuses to sign the ABN, and the latter is properly witnessed. For claims submitted to the Part A MAC, occurrence code 32 and the date of the ABN is required.

Modifier GX (“Notice of Liability Issued, Voluntary Under Payer Policy”) should be used when the beneficiary has signed an ABN, and a denial is anticipated based on provisions other than medical necessity, such as statutory exclusions of coverage or technical issues. An ABN is not required for these denials, but if non-covered services are reported with modifier GX, will automatically be denied services.

The –GZ modifier should be used when physicians, practitioners, or suppliers want to indicate that they expect that Medicare will deny an item or service as not reasonable and necessary and they have not had an ABN signed by the beneficiary. If the service is statutorily non-covered, or without a benefit category, submit the appropriate CPT/HCPCS code with the -GY modifier. An ABN is not required for these denials, and the limitation of liability does not apply for beneficiaries. Services with modifier GY will automatically deny.

Documentation Requirements

The patient’s medical record should include but is not limited to:

  • The assessment of the patient by the ordering provider as it relates to the complaint of the patient for that visit,
  • Relevant medical history
  • Results of pertinent tests/procedures

Signed and dated office visit record/operative report (Please note that all services ordered or rendered to Medicare beneficiaries must be signed.)

Response To Comments

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Coding Information

Bill Type Codes

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Revenue Codes

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CPT/HCPCS Codes

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CPT/HCPCS Modifiers

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ICD-10-CM Codes that Support Medical Necessity

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Group 1 Codes
Code Description
G45.0 Vertebro-basilar artery syndrome
G45.2 Multiple and bilateral precerebral artery syndromes
G45.3 Amaurosis fugax
G45.8 Other transient cerebral ischemic attacks and related syndromes
G45.9 Transient cerebral ischemic attack, unspecified
G46.0 Middle cerebral artery syndrome
G46.3 Brain stem stroke syndrome
G46.4 Cerebellar stroke syndrome
G46.5 Pure motor lacunar syndrome
G46.6 Pure sensory lacunar syndrome
G90.01 Carotid sinus syncope
H34.01 Transient retinal artery occlusion, right eye
H34.02 Transient retinal artery occlusion, left eye
H53.121 Transient visual loss, right eye
H53.122 Transient visual loss, left eye
I20.0 Unstable angina
I20.1 Angina pectoris with documented spasm
I20.81 Angina pectoris with coronary microvascular dysfunction
I20.89 Other forms of angina pectoris
I20.9 Angina pectoris, unspecified
I21.01 ST elevation (STEMI) myocardial infarction involving left main coronary artery
I21.02 ST elevation (STEMI) myocardial infarction involving left anterior descending coronary artery
I21.09 ST elevation (STEMI) myocardial infarction involving other coronary artery of anterior wall
I21.11 ST elevation (STEMI) myocardial infarction involving right coronary artery
I21.19 ST elevation (STEMI) myocardial infarction involving other coronary artery of inferior wall
I21.21 ST elevation (STEMI) myocardial infarction involving left circumflex coronary artery
I21.29 ST elevation (STEMI) myocardial infarction involving other sites
I21.4 Non-ST elevation (NSTEMI) myocardial infarction
I21.A1 Myocardial infarction type 2
I21.A9 Other myocardial infarction type
I21.B Myocardial infarction with coronary microvascular dysfunction
I22.0 Subsequent ST elevation (STEMI) myocardial infarction of anterior wall
I22.1 Subsequent ST elevation (STEMI) myocardial infarction of inferior wall
I22.2 Subsequent non-ST elevation (NSTEMI) myocardial infarction
I22.8 Subsequent ST elevation (STEMI) myocardial infarction of other sites
I23.7 Postinfarction angina
I24.0 Acute coronary thrombosis not resulting in myocardial infarction
I24.81 Acute coronary microvascular dysfunction
I24.89 Other forms of acute ischemic heart disease
I25.110 Atherosclerotic heart disease of native coronary artery with unstable angina pectoris
I25.111 Atherosclerotic heart disease of native coronary artery with angina pectoris with documented spasm
I25.112 Atherosclerotic heart disease of native coronary artery with refractory angina pectoris
I25.118 Atherosclerotic heart disease of native coronary artery with other forms of angina pectoris
I25.2 Old myocardial infarction
I25.5 Ischemic cardiomyopathy
I25.6 Silent myocardial ischemia
I25.710 Atherosclerosis of autologous vein coronary artery bypass graft(s) with unstable angina pectoris
I25.711 Atherosclerosis of autologous vein coronary artery bypass graft(s) with angina pectoris with documented spasm
I25.712 Atherosclerosis of autologous vein coronary artery bypass graft(s) with refractory angina pectoris
I25.718 Atherosclerosis of autologous vein coronary artery bypass graft(s) with other forms of angina pectoris
I25.720 Atherosclerosis of autologous artery coronary artery bypass graft(s) with unstable angina pectoris
I25.721 Atherosclerosis of autologous artery coronary artery bypass graft(s) with angina pectoris with documented spasm
I25.722 Atherosclerosis of autologous artery coronary artery bypass graft(s) with refractory angina pectoris
I25.728 Atherosclerosis of autologous artery coronary artery bypass graft(s) with other forms of angina pectoris
I25.730 Atherosclerosis of nonautologous biological coronary artery bypass graft(s) with unstable angina pectoris
I25.731 Atherosclerosis of nonautologous biological coronary artery bypass graft(s) with angina pectoris with documented spasm
I25.732 Atherosclerosis of nonautologous biological coronary artery bypass graft(s) with refractory angina pectoris
I25.738 Atherosclerosis of nonautologous biological coronary artery bypass graft(s) with other forms of angina pectoris
I25.750 Atherosclerosis of native coronary artery of transplanted heart with unstable angina
I25.751 Atherosclerosis of native coronary artery of transplanted heart with angina pectoris with documented spasm
I25.752 Atherosclerosis of native coronary artery of transplanted heart with refractory angina pectoris
I25.758 Atherosclerosis of native coronary artery of transplanted heart with other forms of angina pectoris
I25.760 Atherosclerosis of bypass graft of coronary artery of transplanted heart with unstable angina
I25.761 Atherosclerosis of bypass graft of coronary artery of transplanted heart with angina pectoris with documented spasm
I25.762 Atherosclerosis of bypass graft of coronary artery of transplanted heart with refractory angina pectoris
I25.768 Atherosclerosis of bypass graft of coronary artery of transplanted heart with other forms of angina pectoris
I25.790 Atherosclerosis of other coronary artery bypass graft(s) with unstable angina pectoris
I25.791 Atherosclerosis of other coronary artery bypass graft(s) with angina pectoris with documented spasm
I25.792 Atherosclerosis of other coronary artery bypass graft(s) with refractory angina pectoris
I25.798 Atherosclerosis of other coronary artery bypass graft(s) with other forms of angina pectoris
I42.1 Obstructive hypertrophic cardiomyopathy
I42.2 Other hypertrophic cardiomyopathy
I44.1 Atrioventricular block, second degree
I44.2 Atrioventricular block, complete
I44.4 Left anterior fascicular block
I44.5 Left posterior fascicular block
I45.0 Right fascicular block
I45.2 Bifascicular block
I45.3 Trifascicular block
I45.6 Pre-excitation syndrome
I45.81 Long QT syndrome
I45.89 Other specified conduction disorders
I46.2 Cardiac arrest due to underlying cardiac condition
I46.8 Cardiac arrest due to other underlying condition
I47.0 Re-entry ventricular arrhythmia
I47.11 Inappropriate sinus tachycardia, so stated
I47.19 Other supraventricular tachycardia
I47.21 Torsades de pointes
I48.0 Paroxysmal atrial fibrillation
I48.11 Longstanding persistent atrial fibrillation
I48.19 Other persistent atrial fibrillation
I48.20 Chronic atrial fibrillation, unspecified
I48.21 Permanent atrial fibrillation
I48.3 Typical atrial flutter
I48.4 Atypical atrial flutter
I48.91 Unspecified atrial fibrillation
I48.92 Unspecified atrial flutter
I49.01 Ventricular fibrillation
I49.02 Ventricular flutter
I49.1 Atrial premature depolarization
I49.2 Junctional premature depolarization
I49.3 Ventricular premature depolarization
I49.40 Unspecified premature depolarization
I49.5 Sick sinus syndrome
I49.8 Other specified cardiac arrhythmias
I97.120 Postprocedural cardiac arrest following cardiac surgery
I97.121 Postprocedural cardiac arrest following other surgery
I97.190 Other postprocedural cardiac functional disturbances following cardiac surgery
I97.191 Other postprocedural cardiac functional disturbances following other surgery
R00.0 Tachycardia, unspecified
R00.1 Bradycardia, unspecified
R00.2 Palpitations
R06.00 Dyspnea, unspecified
R06.02 Shortness of breath
R06.09 Other forms of dyspnea
R07.1 Chest pain on breathing
R07.2 Precordial pain
R07.89 Other chest pain
R07.9 Chest pain, unspecified
R40.4 Transient alteration of awareness
R42 Dizziness and giddiness
R55 Syncope and collapse
Z45.010 Encounter for checking and testing of cardiac pacemaker pulse generator [battery]
Z45.018 Encounter for adjustment and management of other part of cardiac pacemaker
Z45.02 Encounter for adjustment and management of automatic implantable cardiac defibrillator
Z86.73 Personal history of transient ischemic attack (TIA), and cerebral infarction without residual deficits
Z86.74 Personal history of sudden cardiac arrest
Z95.0 Presence of cardiac pacemaker
Z95.810 Presence of automatic (implantable) cardiac defibrillator
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ICD-10-CM Codes that DO NOT Support Medical Necessity

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Bill Type Codes

Contractors may specify Bill Types to help providers identify those Bill Types typically used to report this service. Absence of a Bill Type does not guarantee that the article does not apply to that Bill Type. Complete absence of all Bill Types indicates that coverage is not influenced by Bill Type and the article should be assumed to apply equally to all claims.

Code Description

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Revenue Codes

Contractors may specify Revenue Codes to help providers identify those Revenue Codes typically used to report this service. In most instances Revenue Codes are purely advisory. Unless specified in the article, services reported under other Revenue Codes are equally subject to this coverage determination. Complete absence of all Revenue Codes indicates that coverage is not influenced by Revenue Code and the article should be assumed to apply equally to all Revenue Codes.

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Other Coding Information

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Revision History Information

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Associated Documents

Medicare BPM Ch 15.50.2 SAD Determinations
Medicare BPM Ch 15.50.2
Related National Coverage Documents
NCDs
20.15 - Electrocardiographic Services
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