Where this LCD applies
Each contract number is a jurisdiction on the remittance; the policy binds claims processed under these contracts and no others.
Billing and coding: diagnoses and procedure codes
Since 2019 the codes live in the companion article rather than the LCD. Billing and Coding A56902 (Billing and Coding: Category III Codes), Billing and Coding A57552 (Billing and Coding: Coronary Computed Tomography Angiography (CCTA)), Billing and Coding A57944 (Billing and Coding: Hypoglossal Nerve Stimulation for Treatment of Obstructive Sleep Apnea), Billing and Coding A58209 (Billing and Coding: Transurethral Waterjet Ablation of the Prostate), Billing and Coding A58213 (Billing and Coding: Implantable Continuous Glucose Monitors (I-CGM)), Billing and Coding A58471 (Billing and Coding: Colon Capsule Endoscopy (CCE)), Billing and Coding A58473 (Billing and Coding: Non-Invasive Fractional Flow Reserve (FFR) for Ischemic Heart Disease) carry the diagnosis and procedure lists the contractor loads as the claims edit. CPT codes are shown as bare numbers because the descriptors are licensed by the AMA; HCPCS Level II descriptors are public and shown.
A56902: Billing and Coding: Category III Codes (Billing and Coding, effective 2026-01-01)
- Covered ICD-10-CM codes
- 0
- 0 groups
- Non-covered ICD-10-CM codes
- 0
- Procedure codes listed
- 13
- Full article
- cms.gov record
Procedure codes: 0075T, 0076T, 0184T, 0308T, 0395T, 0525T, 0526T, 0527T, 0528T, 0529T, 0530T, 0531T, 0532T.
A57552: Billing and Coding: Coronary Computed Tomography Angiography (CCTA) (Billing and Coding, effective 2026-10-01)
- Covered ICD-10-CM codes
- 216
- 1 group
- Non-covered ICD-10-CM codes
- 0
- Procedure codes listed
- 4
- Full article
- cms.gov record
| ICD-10-CM | Description (FY2027) |
|---|---|
| C38.0 | — |
| C45.2 | — |
| C79.89 | — |
| C79.9 | — |
| D15.1 | — |
| I20.0 | — |
| I20.1 | — |
| I20.81 | — |
| I20.89 | — |
| I24.0 | — |
| I25.10 | — |
| I25.110 | — |
| I25.111 | — |
| I25.112 | — |
| I25.118 | — |
| I25.119 | — |
| I25.2 | — |
| I25.3 | — |
| I25.41 | — |
| I25.42 | — |
| I25.5 | — |
| I25.6 | — |
| I25.700 | — |
| I25.701 | — |
Procedure codes: 75571, 75572, 75573, 75574.
A57944: Billing and Coding: Hypoglossal Nerve Stimulation for Treatment of Obstructive Sleep Apnea (Billing and Coding, effective 2026-10-01)
- Covered ICD-10-CM codes
- 18
- 2 groups
- Non-covered ICD-10-CM codes
- 1
- Procedure codes listed
- 6
- Full article
- cms.gov record
| ICD-10-CM | Description (FY2027) |
|---|---|
| G47.33 | — |
| Z68.18 | — |
| Z68.19 | — |
| Z68.20 | — |
| Z68.21 | — |
| Z68.22 | — |
| Z68.23 | — |
| Z68.24 | — |
| Z68.25 | — |
| Z68.26 | — |
| Z68.27 | — |
| Z68.28 | — |
| Z68.29 | — |
| Z68.30 | — |
| Z68.31 | — |
| Z68.32 | — |
| Z68.33 | — |
| Z68.34 | — |
Procedure codes: 64582, 64583, 64584, C8007 (Open Implantation Of Hypoglossal Nerve Neurostimulator Array And Pulse Generator, Not Requiring Insertion Of A Separate Distal Respiratory Sensor Electrode Or Electrode Array), C8008 (Revision Or Replacement Of Hypoglossal Nerve Neurostimulator Array Including Connection To Existing Pulse Generator), C8009 (Removal Of Hypoglossal Nerve Neurostimulator Array And Pulse Generator).
A58209: Billing and Coding: Transurethral Waterjet Ablation of the Prostate (Billing and Coding, effective 2026-01-01)
- Covered ICD-10-CM codes
- 1
- 1 group
- Non-covered ICD-10-CM codes
- 0
- Procedure codes listed
- 2
- Full article
- cms.gov record
| ICD-10-CM | Description (FY2027) |
|---|---|
| N40.1 | — |
Procedure codes: 52597, C2596 (Probe, Image-Guided, Robotic, Waterjet Ablation).
A58213: Billing and Coding: Implantable Continuous Glucose Monitors (I-CGM) (Billing and Coding, effective 2026-09-10)
- Covered ICD-10-CM codes
- 373
- 1 group
- Non-covered ICD-10-CM codes
- 1
- Procedure codes listed
- 3
- Full article
- cms.gov record
| ICD-10-CM | Description (FY2027) |
|---|---|
| E08.00 | — |
| E08.01 | — |
| E08.10 | — |
| E08.11 | — |
| E08.21 | — |
| E08.22 | — |
| E08.29 | — |
| E08.311 | — |
| E08.319 | — |
| E08.3211 | — |
| E08.3212 | — |
| E08.3213 | — |
| E08.3291 | — |
| E08.3292 | — |
| E08.3293 | — |
| E08.3311 | — |
| E08.3312 | — |
| E08.3313 | — |
| E08.3391 | — |
| E08.3392 | — |
| E08.3393 | — |
| E08.3411 | — |
| E08.3412 | — |
| E08.3413 | — |
Procedure codes: 0446T, 0447T, 0448T.
A58471: Billing and Coding: Colon Capsule Endoscopy (CCE) (Billing and Coding, effective 2023-02-23)
- Covered ICD-10-CM codes
- 6
- 1 group
- Non-covered ICD-10-CM codes
- 0
- Procedure codes listed
- 1
- Full article
- cms.gov record
| ICD-10-CM | Description (FY2027) |
|---|---|
| K63.5 | — |
| K92.1 | — |
| K92.2 | — |
| R19.5 | — |
| Z53.09 | — |
| Z53.8 | — |
Procedure codes: 91113.
A58473: Billing and Coding: Non-Invasive Fractional Flow Reserve (FFR) for Ischemic Heart Disease (Billing and Coding, effective 2024-01-01)
- Covered ICD-10-CM codes
- 1
- 1 group
- Non-covered ICD-10-CM codes
- 1
- Procedure codes listed
- 1
- Full article
- cms.gov record
| ICD-10-CM | Description (FY2027) |
|---|---|
| R93.1 | — |
Procedure codes: 75580.
Coverage indications, limitations and medical necessity
The American Medical Association (AMA) develops temporary Current Procedural Terminology (CPT) Category III codes to track the utilization of emerging technologies, services, and procedures. The CATEGORY III CPT Code description does not establish a service or procedure as safe, effective or applicable to the clinical practice of medicine.
Indications and Limitations:
Section 1862(a)(1)(A) of the Social Security Act (SSA) is the statutory basis for denying payment for types of care, items, services, and procedures, not excluded by any other statutory clause while meeting all technical requirements for coverage, that are determined to be any of the following:
• Not generally accepted by the medical community as safe and effective in the setting and for the condition for which it is used;
• Not proven safe and effective based on peer review or scientific literature;
• Experimental;
• Not medically necessary for a particular patient;
• Furnished at a level, duration, or frequency that is not medically appropriate;
• Not furnished in accordance with accepted standards of medical practice; or
• Not furnished in a setting appropriate to the patient’s medical needs and condition.
Items and services must be established as safe and effective to be considered medically necessary. That is, the items and services must be:
• Consistent with the symptoms of diagnosis of illness or injury under treatment; and
• Necessary for, and consistent with, generally accepted professional medical standards of care (e.g., not experimental) and ;
• Not furnished primarily for the convenience of the patient, the provider or supplier; and
• Furnished at the most appropriate level of care that can be provided safely and effectively to the patient.
Medical devices that are not approved for marketing by the Food and Drug Administration (FDA) are considered investigational and are not considered reasonable and necessary under SSA 1862(a)(1)(A). Medicare payment, therefore, may not be made for procedures performed using devices that have not been approved for marketing by the FDA unless performed within the context of a clinical trial qualifying under the National Coverage Determination (NCD) for Routine Costs in Clinical Trials (310.1) or in approved FDA Investigational Device Exemption (IDE) trial.
A/B MACs (B) continue to determine if a service is reasonable and necessary to treat illness or injury. If a service is not reasonable and necessary to treat illness or injury for any reason (including lack of safety and efficacy because it is an experimental procedure, etc.), A/B MACs (B) consider the service noncovered notwithstanding the presence of a payment amount for the service in the Medicare fee schedule.
FDA designation/determination of a device as 510(k) means that the device has been approved for marketing by the FDA because it is similar to something already on the market that was "grandfathered in" by the FDA and therefore these devices are eligible for coverage.
In addition, items, services, or devices may also be not covered under SSA 1862(a)(1)(D), (E), or (O).
Summary of evidence (opening)
0525T-0532T
0525T Insertion or replacement of intracardiac ischemia monitoring system, including testing of the lead and monitor, initial system programming, and imaging supervision and interpretation; complete system (electrode and implantable monitor)
0526T Insertion or replacement of intracardiac ischemia monitoring system, including testing of the lead and monitor, initial system programming, and imaging supervision and interpretation; electrode only
0527T Insertion or replacement of intracardiac ischemia monitoring system, including testing of the lead and monitor, initial system programming, and imaging supervision and interpretation; implantable monitor only
The contractor cites 8 sources in the bibliography; the full summary and analysis of evidence are in the CMS record.
Dates, lineage and related policies
- Original determination effective
- 2015-10-01
- Current revision effective
- 2026-01-01
- Last reviewed by the contractor
- 2026-02-13
- MCD version
- 85
Other related documents: A54953 (Article), A59090 (Response to Comments).
Using this policy on a claim
Match the documented indication to the covered indications above before the service is scheduled, carry a diagnosis from the article's covered list on the claim line, and keep the elements the documentation section asks for in the record, because the contractor can request it later through medical review. A denial under this policy arrives as CARC 50 with remark N115; the LCD lookup guide walks through the appeal path and the Advance Beneficiary Notice rules, and the Wisconsin Physicians Service Insurance Corporation hub lists every other active policy from the same contractor.
Frequently asked questions
What does LCD L35490 cover?
The American Medical Association (AMA) develops temporary Current Procedural Terminology (CPT) Category III codes to track the utilization of emerging technologies, services, and procedures. The CATEGORY III CPT Code description does not establish a service or procedure as safe, effective or applicable to the clinical practice of medicine. The full indications and limitations are reproduced on this page from the CMS Medicare Coverage Database export of September 24, 2026.
Which states does LCD L35490 apply to?
Wisconsin Physicians Service Insurance Corporation applies it to Medicare claims in AK, AL, AR, AZ, CA, CO, CT, DE, FL, GA, HI, IA, ID, IL, IN, KS, KY, LA, MA, MD, ME, MI, MO, MS, MT, NC, ND, NE, NH, NJ, NM, NV, OH, OK, OR, PA, RI, SC, SD, TN, TX, UT, VA, VT, WA, WI, WV, WY. A Local Coverage Determination binds only the contractor that wrote it; the same service in another jurisdiction is judged under that contractor's own policy or, where none exists, claim by claim.
Which diagnosis codes support medical necessity under LCD L35490?
The companion billing and coding article A57552 lists 216 ICD-10-CM codes in 1 group that support medical necessity; the first 24 appear on this page and the complete list is in the article on cms.gov.
How do I appeal a denial under LCD L35490?
The remittance carries claim adjustment reason code 50 with remark code N115, naming the LCD. Compare the documented indication with the policy's covered indications and the article's diagnosis list, then file a redetermination within 120 days with the record attached; if the service genuinely falls outside the policy, the patient can be billed only when a valid Advance Beneficiary Notice was obtained before the service.
Sources
Every figure on this page is taken from the CMS publications below, as released by the Centers for Medicare & Medicaid Services. Projection built 2026-10-02. Verify against the primary file before billing or contracting decisions.
- Medicare Coverage Database, current LCD exportVersion MCD release 2026-09-24 · effective 2026-09-20 · file lcd.csvSHA-256 2fcc4251b6ddd1eb…
- Medicare Coverage Database, current Billing and Coding Articles exportVersion MCD release 2026-09-24 · effective 2026-09-20 · file article.csvSHA-256 f31932f1df3b4035…
- ICD-10-CM FY2027 code descriptionsVersion FY2027 · effective 2026-10-01 · file icd10cm_codes_2027.txtSHA-256 3c0583a38ee0e848…
Disclaimer
The policy text and code lists are reproduced from the CMS Medicare Coverage Database export as an operational reference. Verify against the current LCD and article on cms.gov before billing; coverage depends on the full record and the contractor. Not legal, clinical or billing advice.