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Every policy word on this page is CMS's own. Verzi adds pins, receipts, and links only.

A4557

Transcutaneous Electrical Nerve Stimulators (TENS)

LCD L33802 · CMS's HCPCS descriptor for A4557: Lead wires, (e.g., apnea monitor), per pair.

CMS lists A4557 in 2 LCDs in the Verzi KB: LCD L33802 LCD L34821

Not on CMS's Required Prior Authorization List for DMEPOS on 2026-10-13. source

LCD L33802 · 10 versions, 2015 to today · last changed 2024-01-01 (R9)

Version 32 of LCD L33802: in force by CMS's dates 2021-11-20 to 2023-12-31. The policy text on this page comes from this archived version. On its start date, 2021-11-20, the companion Articles in force were Article A52520 version 27 and Article A55426 version 91.

DME MAC jurisdictions
JA · Noridian 16013
CT, DE, DC, ME, MD, MA, NH, NJ, NY, PA, RI, VT
JB · CGS 17013
IL, IN, KY, MI, MN, OH, WI
JC · CGS 18003
AL, AR, CO, FL, GA, LA, MS, NM, NC, OK, PR, SC, TN, TX, VI, VA, WV
JD · Noridian 19003
AK, AS, AZ, CA, GU, HI, ID, IA, KS, MO, MT, NE, NV, ND, MP, OR, SD, UT, WA, WY
source

CMS's Who are the MACs jurisdiction pages (DME facts as of 2025-09-30) name each contractor and its states; the MCD's Contractor Information table on every DME LCD prints the contract numbers. Both read 2026-10-09. Verzi adds the state lookup only.

You are viewing version 32 (2021-11-20 to 2023-12-31). Version 35 is in force today.

Codes CMS lists in this LCD's current version (version 35, 5 codes). CMS's download carries no list for version 32: A4557 A4595 E0720 E0730 E0731

Sections in this version: CMS National Coverage Policy · Coverage Indications, Limitations, and/or Medical Necessity · Coding Information · Associated Information · Sources of Information. Plus 3 sections marked N/A in this version.

Full verbatim text serves to customers · Customer? Log in

Version history, LCD L33802

CMS numbers each version. Each box shows the version's window by CMS's stated dates. Select a version to show it on this page. Versions superseded the same day they took effect never governed a claim, so the page hides them until you ask. Version numbers CMS never published to its archive do not exist as documents.

Revision history, every version

CMS's own change log, quoted, 9 entries. It does not change with the version shown. A revision (R-number) is a change CMS logged. The version (vN) is the snapshot that carries it.

R9 · 2024-01-01 · v35
Revision Effective Date: 01/01/2024
COVERAGE INDICATIONS, LIMITATIONS, AND/OR MEDICAL NECESSITY:
Added: “and document an affirmative response” to language that pertains to contact with the beneficiary or caregiver/designee for DMEPOS products supplied as refills
Revised: “approaching exhaustion” to “expected to end” in regard to existing supplies
Revised: “Contact with the beneficiary or designee regarding refills must take place no sooner than 14 calendar days prior to the delivery/shipping date.” to “Contact with the beneficiary or designee regarding refills must take place no sooner than 30 calendar days prior to the expected end of the current supply.”
Revised: “For delivery of refills, the supplier must deliver the DMEPOS product no sooner than 10 calendar days prior to the end of usage for the current product.” to “For delivery of refills, the supplier must deliver the DMEPOS product no sooner than 10 calendar days prior to the expected end of the current supply.”


12/14/2023: Pursuant to the 21st Century Cures Act, these revisions do not require notice and comment because the revisions are non-discretionary updates to refill requirement information per CMS Final Rule CMS-1780-F.
R8 · 2021-11-20 · v32
Revision Effective Date: 11/20/2021
COVERAGE INDICATIONS, LIMITATIONS, AND/OR MEDICAL NECESSITY:
Removed: Criterion III Chronic Lower Back Pain (CLBP) due to coverage expired June 7, 2015 under NCD 160.27
Added: Not reasonable and necessary statement in accordance with NCD 160.27
CODING INFORMATION:
Removed: Modifier Q0 under HCPCS Modifiers section
APPENDICES:
Removed: CLBP clinical trial references


10/7/2021: In accordance with NCD 160.27, coverage of TENS for CLBP is no longer available under Coverage with Evidence Development. Per the NCD, TENS is not reasonable and necessary for the treatment of CLBP under section 1862(a)(1)(A) of the Act. As a result, the DME MACs are removing this requirement as a non-discretionary change to the LCD, per the Program Integrity Manual, Chapter 13, §13.2.4.
R7 · 2020-01-01 · v29
Revision Effective Date: 01/01/2020:
 COVERAGE INDICATIONS, LIMITATIONS, AND/OR MEDICAL NECESSITY:
 Revised: “physician” to “practitioner”
 Removed: Statement to refer to ICD-10 Codes that are Covered section in the LCD-related PA
 Added: Statement to refer to ICD-10 code list in the LCD-related Policy Article
 Revised: “physician” to “treating practitioner”
 GENERAL:
 Revised: Order information as a result of Final Rule 1713
 REFILL REQUIREMENTS:
 Revised: “ordering physicians” to “treating practitioners”
 CODING INFORMATION:
 Removed: Field titled “Bill Type”
 Removed: Field titled “Revenue Codes”
 Removed: Field titled “ICD-10 Codes that Support Medical Necessity”
 Removed: Field titled “ICD-10 Codes that DO NOT Support Medical Necessity”
 Removed: Field titled “Additional ICD-10 Information”
 DOCUMENTATION REQUIREMENTS:
 Revised: “physician’s” to “treating practitioner’s”
 GENERAL DOCUMENTATION REQUIREMENTS:
 Revised: “Prescriptions (orders)” to “SWO”


02/27/2020: Pursuant to the 21st Century Cures Act, these revisions do not require notice and comment because they are due to non-discretionary coverage updates reflective of CMS FR-1713.
R6 · 2019-01-01 · v24
Revision Effective Date: 01/01/2019
COVERAGE INDICATIONS, LIMITATIONS, AND/OR MEDICAL NECESSITY:
 Removed: Statement to refer to diagnosis code section below
 Added:
Refer to Covered ICD-10 Codes in the LCD-related Policy Article
 ICD-10 CODES THAT SUPPORT MEDICAL NECESSITY:
 Moved: All diagnosis codes to the LCD-related Policy Article diagnosis code section per CMS instruction
 ICD-10 CODES THAT DO NOT SUPPORT MEDICAL NECESSITY:
 Moved: Statement about noncovered diagnosis codes moved to LCD-related Policy Article noncovered diagnosis code section per CMS instruction
R5 · 2017-10-01 · v18
Revision Effective Date: 10/01/2017
ICD-10 CODES THAT SUPPORT MEDICAL NECESSITY:
Added: New ICD-10 codes
 Deleted: Non-valid ICD-10 (effective 10/01/2015)


11/30/2017: At this time 21st Century Cures Act will apply to new and revised LCDs that restrict coverage which requires comment and notice. This revision is not a restriction to the coverage determination; and, therefore not all the fields included on the LCD are applicable as noted in this policy.
R4 · 2017-01-01 · v12
Revision Effective Date: 01/01/2017
COVERAGE INDICATIONS, INDICATIONS, LIMITATIONS AND/OR MEDICAL NECESSITY:
Removed: Standard Documentation Language
Added: New reference language and directions to Standard Documentation Requirements
Added: General Requirements
Revised: Refill Requirements
DOCUMENTATION REQUIREMENTS:
Removed: Standard Documentation Language
Added: General Documentation Requirements
Added: New reference language and directions to Standard Documentation Requirements
POLICY SPECIFIC DOCUMENTATION REQUIREMENTS:
Removed: Standard Documentation Language
Added: Direction to Standard Documentation Requirements
Removed: Supplier Manual reference under Miscellaneous
Removed: PIM reference under Appendices
RELATED LOCAL COVERAGE DOCUMENTS:
Added: LCD-related Standard Documentation Requirements article
R3 · 2016-07-01 · v9
Effective July 1, 2016 oversight for DME MAC LCDs is the responsibility of CGS Administrators, LLC 18003 and 17013 and Noridian Healthcare Solutions, LLC 19003 and 16013. No other changes have been made to the LCDs.
R2 · 2015-10-01 · v6
Revision Effective Date: 10/31/2014
COVERAGE INDICATIONS, LIMITATIONS AND/OR MEDICAL NECESSITY:
Revised: Standard Documentation Language to add covered prior to a beneficiary’s Medicare eligibility
DOCUMENTATION REQUIREMENTS:
Revised: Standard Documentation Language for WOPD to make consistent with ACA requirements
Revised: Standard Documentation Language to add who can enter date of delivery date on the POD
Added: Instructions for Equipment Retained from a Prior Payer
Added: Repair/Replacement section
R1 · 2015-10-01 · v5
Revision Effective Date: 10/01/2015
ICD-10 CODES THAT SUPPORT MEDICAL NECESSITY:
ICD-10 diagnosis codes updated based on ICD-10 Conversion/Coding Infrastructure Revisions/ICD-9 Updates to National Coverage Determinations (NCDs) Maintenance CR
Receipts for auditors

Version 32 of LCD L33802, shown on this page: in force by CMS's dates 2021-11-20 to 2023-12-31. Archived 2026-09-26. CMS's copy · Our archived file. 8 of 8 sections are proven word-identical to the archived file.

Every archived version of LCD L33802 (10 versions, CMS's dates, window by the as-of rule).

DocumentVersionIn forceArchived onVerify
LCD L33802version 22015-10-01, superseded same day2026-09-26CMS's copy · Our archived file
LCD L33802version 52015-10-01, superseded same day2026-09-26CMS's copy · Our archived file
LCD L33802version 62015-10-01 to 2016-06-302026-09-26CMS's copy · Our archived file
LCD L33802version 92016-07-01 to 2016-12-312026-09-26CMS's copy · Our archived file
LCD L33802version 122017-01-01 to 2017-09-302026-09-26CMS's copy · Our archived file
LCD L33802version 182017-10-01 to 2018-12-312026-09-26CMS's copy · Our archived file
LCD L33802version 242019-01-01 to 2019-12-312026-09-26CMS's copy · Our archived file
LCD L33802version 292020-01-01 to 2021-11-192026-09-26CMS's copy · Our archived file
LCD L33802version 32 shown2021-11-20 to 2023-12-312026-09-26CMS's copy · Our archived file
LCD L33802version 352024-01-01 to today2026-09-26CMS's copy · Our archived file

The related Articles each have their own receipts: Article A55426 · Article A52520.

Each archived file's page gives its sha256 fingerprint. A copy of the file hashes to the same value, byte for byte.

CMS's live page shows only the current version. To check a passage by eye, open CMS's copy of the same version number. A version's window ends on the earlier of CMS's stated end date and the day before the next version starts.

Every policy word on this page is CMS's, from the archived version named beside it. Verzi adds labels, highlights, citations and links only. Verzi-written summary content on this page: none.

Governing policies, as CMS lists them:

  • LCD L33802 · Transcutaneous Electrical Nerve Stimulators (TENS)
    CMS lists A4557 in group 2 of version 35. CMS's description, quoted: “LEAD WIRES, (E.G., APNEA MONITOR), PER PAIR”.
    Related Articles, as CMS lists them: Article A55426 · Article A52520
  • LCD L34821 · Transcutaneous Electrical Joint Stimulation Devices (TEJSD)
    CMS lists A4557 in group 2 of version 21. CMS's description, quoted: “LEAD WIRES, (E.G., APNEA MONITOR), PER PAIR”.
    Related Articles, as CMS lists them: Article A55426 · Article A52713

From CMS's LCD code table. HCPCS Level II codes only.

source

CMS's LCD code table in the Medicare Coverage Database download, archived 2026-10-09: Our archived file.

Watch A4557

One email when any policy cited for A4557 changes or gains a future effective date. Nothing else, ever.