LCD Reference Article Billing and Coding Article

Billing and Coding: Micro-Invasive Glaucoma Surgery (MIGS)

A56633

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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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Contractor Information

Article Information

General Information

Source Article ID
N/A
Article ID
A56633
Original ICD-9 Article ID
Not Applicable
Article Title
Billing and Coding: Micro-Invasive Glaucoma Surgery (MIGS)
Article Type
Billing and Coding
Original Effective Date
12/30/2019
Revision Effective Date
10/07/2023
Revision Ending Date
N/A
Retirement Date
N/A

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  • Title XVIII of the Social Security Act, Section 1833(e) states that no payment shall be made to any provider of services or other person under this part unless there has been furnished such information as may be necessary in order to determine the amounts due such provider or other person under this part for the period with respect to which the amounts are being paid or for any prior period.

Article Guidance

Article Text

This Billing and Coding Article provides billing and coding guidance for Local Coverage Determination (LCD) L38223, Micro-Invasive Glaucoma Surgery (MIGS). Please refer to the LCD for reasonable and necessary requirements.

Coding Guidance

Notice: It is not appropriate to bill Medicare for services that are not covered (as described by the entire LCD) as if they are covered. When billing for non-covered services, use the appropriate modifier.

Utilization Parameters

Medicare may cover only 1 unit per eye, per date of service of CPT code 66989 or 66991 for insertion of glaucoma drainage device(s) into the trabecular meshwork (e.g., iStent®, or iStent inject®), performed in conjunction with cataract surgery and when the medically reasonable and necessary criteria as stated in the LCD are met. Although more than one drainage device into the trabecular meshwork of a single eye on a single day of service, may be performed using an insertion tool loaded with more than one device, (e.g., iStent inject®), once the insertion tool is deployed within the eye, the work and clinical skill required to place additional device(s) is equivalent to placement of other U.S. Food and Drug Administration (FDA) cleared devices described by the same codes. Therefore, only one unit of 66989 or 66991 per eye per day may be billed, regardless of the number of devices inserted into a single eye on the same date of service.

Medicare may cover only 1 unit per eye, per date of service of CPT code 0449T for insertion of glaucoma drainage device(s) into the subconjunctival space (e.g., XEN45®), when the medically reasonable and necessary criteria as stated in the LCD are met.

Note: CPT Code 0450T for additional device insertion is not covered.

Note: CPT code 0671T does not need to be reported with any of the following codes: 66982, 66983, 66984, 66987, and 66988.

Documentation Requirements 

  1. All documentation must be maintained in the patient's medical record and must support the medical necessity of the services as directed in this article and be made available to the contractor upon request.
  2. Every page of the record must be legible and include appropriate patient identification information (e.g., complete name, dates of service[s]). The documentation must include the legible signature of the physician or non-physician practitioner responsible for and providing the care to the patient.
  3. The submitted medical record must support the use of the selected ICD-10-CM code(s). The submitted CPT/HCPCS code must describe the service performed.

Response To Comments

Number Comment Response
1
N/A

Coding Information

Bill Type Codes

Code Description

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N/A

Revenue Codes

Code Description

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N/A

CPT/HCPCS Codes

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CPT/HCPCS Modifiers

Group 1

Group 1 Paragraph

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Group 1 Codes

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ICD-10-CM Codes that Support Medical Necessity

Group 1

(9 Codes)
Group 1 Paragraph

It is the provider’s responsibility to select codes carried out to the highest level of specificity and selected from the ICD-10-CM code book appropriate to the year in which the service is rendered for the claim(s) submitted. 

The following ICD-10-CM codes support medical necessity and provide coverage for CPT codes: 66989, 66991 and 0671T.

Group 1 Codes
Code Description
H40.1111 Primary open-angle glaucoma, right eye, mild stage
H40.1112 Primary open-angle glaucoma, right eye, moderate stage
H40.1113 Primary open-angle glaucoma, right eye, severe stage
H40.1121 Primary open-angle glaucoma, left eye, mild stage
H40.1122 Primary open-angle glaucoma, left eye, moderate stage
H40.1123 Primary open-angle glaucoma, left eye, severe stage
H40.1131 Primary open-angle glaucoma, bilateral, mild stage
H40.1132 Primary open-angle glaucoma, bilateral, moderate stage
H40.1133 Primary open-angle glaucoma, bilateral, severe stage

Group 2

(48 Codes)
Group 2 Paragraph

It is the provider’s responsibility to select codes carried out to the highest level of specificity and selected from the ICD-10-CM code book appropriate to the year in which the service is rendered for the claim(s) submitted.

The following ICD-10-CM codes support medical necessity and provide coverage for CPT code: 0449T (XEN).

Group 2 Codes
Code Description
H40.1111 Primary open-angle glaucoma, right eye, mild stage
H40.1112 Primary open-angle glaucoma, right eye, moderate stage
H40.1113 Primary open-angle glaucoma, right eye, severe stage
H40.1114 Primary open-angle glaucoma, right eye, indeterminate stage
H40.1121 Primary open-angle glaucoma, left eye, mild stage
H40.1122 Primary open-angle glaucoma, left eye, moderate stage
H40.1123 Primary open-angle glaucoma, left eye, severe stage
H40.1124 Primary open-angle glaucoma, left eye, indeterminate stage
H40.1131 Primary open-angle glaucoma, bilateral, mild stage
H40.1132 Primary open-angle glaucoma, bilateral, moderate stage
H40.1133 Primary open-angle glaucoma, bilateral, severe stage
H40.1134 Primary open-angle glaucoma, bilateral, indeterminate stage
H40.1211 Low-tension glaucoma, right eye, mild stage
H40.1212 Low-tension glaucoma, right eye, moderate stage
H40.1213 Low-tension glaucoma, right eye, severe stage
H40.1214 Low-tension glaucoma, right eye, indeterminate stage
H40.1221 Low-tension glaucoma, left eye, mild stage
H40.1222 Low-tension glaucoma, left eye, moderate stage
H40.1223 Low-tension glaucoma, left eye, severe stage
H40.1224 Low-tension glaucoma, left eye, indeterminate stage
H40.1231 Low-tension glaucoma, bilateral, mild stage
H40.1232 Low-tension glaucoma, bilateral, moderate stage
H40.1233 Low-tension glaucoma, bilateral, severe stage
H40.1234 Low-tension glaucoma, bilateral, indeterminate stage
H40.1311 Pigmentary glaucoma, right eye, mild stage
H40.1312 Pigmentary glaucoma, right eye, moderate stage
H40.1313 Pigmentary glaucoma, right eye, severe stage
H40.1314 Pigmentary glaucoma, right eye, indeterminate stage
H40.1321 Pigmentary glaucoma, left eye, mild stage
H40.1322 Pigmentary glaucoma, left eye, moderate stage
H40.1323 Pigmentary glaucoma, left eye, severe stage
H40.1324 Pigmentary glaucoma, left eye, indeterminate stage
H40.1331 Pigmentary glaucoma, bilateral, mild stage
H40.1332 Pigmentary glaucoma, bilateral, moderate stage
H40.1333 Pigmentary glaucoma, bilateral, severe stage
H40.1334 Pigmentary glaucoma, bilateral, indeterminate stage
H40.1411 Capsular glaucoma with pseudoexfoliation of lens, right eye, mild stage
H40.1412 Capsular glaucoma with pseudoexfoliation of lens, right eye, moderate stage
H40.1413 Capsular glaucoma with pseudoexfoliation of lens, right eye, severe stage
H40.1414 Capsular glaucoma with pseudoexfoliation of lens, right eye, indeterminate stage
H40.1421 Capsular glaucoma with pseudoexfoliation of lens, left eye, mild stage
H40.1422 Capsular glaucoma with pseudoexfoliation of lens, left eye, moderate stage
H40.1423 Capsular glaucoma with pseudoexfoliation of lens, left eye, severe stage
H40.1424 Capsular glaucoma with pseudoexfoliation of lens, left eye, indeterminate stage
H40.1431 Capsular glaucoma with pseudoexfoliation of lens, bilateral, mild stage
H40.1432 Capsular glaucoma with pseudoexfoliation of lens, bilateral, moderate stage
H40.1433 Capsular glaucoma with pseudoexfoliation of lens, bilateral, severe stage
H40.1434 Capsular glaucoma with pseudoexfoliation of lens, bilateral, indeterminate stage
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ICD-10-CM Codes that DO NOT Support Medical Necessity

Group 1

(1 Code)
Group 1 Paragraph

All those not listed under the “ICD-10-CM Codes that Support Medical Necessity” section of this article.

Group 1 Codes
Code Description
XX000 Not Applicable
N/A

ICD-10-PCS Codes

Group 1

Group 1 Paragraph

N/A

Group 1 Codes

N/A

N/A

Additional ICD-10 Information

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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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N/A

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.

Code Description

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N/A

Other Coding Information

Group 1

Group 1 Paragraph

N/A

Group 1 Codes

N/A

N/A

Coding Table Information

Excluded CPT/HCPCS Codes - Table Format
Code Descriptor Generic Name Descriptor Brand Name Exclusion Effective Date Exclusion End Date Reason for Exclusion
N/A N/A
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Non-Excluded CPT/HCPCS Ended Codes - Table Format
Code Descriptor Generic Name Descriptor Brand Name Exclusion Effective Date Exclusion End Date Reason for Exclusion
N/A

Revision History Information

Revision History Date Revision History Number Revision History Explanation
10/07/2023 R5

Article revised and published on 11/16/2023 effective for dates of service on and after 10/07/2023 in response to inquiries. The following ICD-10-CM codes have been added to the article: H40.1113, H40.1123, and H40.1133 (Group 1 Codes).

08/02/2022 R4

Article revised and published on 07/20/2023 effective for dates of service on and after 08/02/2022 because the device represented by CPT code 0671T received FDA clearance on 08/02/2022.

The following CPT code has been added to the CPT/HCPCS Group 1 Codes and the ICD-10-CM Codes that Support Medical Necessity Group 1 Paragraph sections: 0671T.

The following CPT code has been removed from the CPT/HCPCS Group 3 Codes considered not medically reasonable and necessary (non-covered) section: 0671T.

The following was added to the Coding Guidance section:
Note:  CPT code 0671T does not need to be reported with any of the following codes: 66982, 66983, 66984, 66987, and 66988.

01/01/2022 R3

Article revised and published on 01/20/2022 effective for dates of service on and after 01/01/2022 to reflect the Annual CPT/HCPCS Code Updates.

The following CPT codes have been added to the Article: 66989, 66991 were added to the CPT/HCPCS Group 1 Codes and the ICD-10-CM Codes that Support Medical Necessity Group 1 Paragraph sections. 0671T was added to the CPT/HCPCS Group 3 Codes considered not reasonable and necessary.

The following CPT codes have been deleted and therefore have been removed from the article: 0376T from the CPT/HCPCS Group 3 Codes and 0191T from the CPT/HCPCS Group 1 Codes, the ICD-10-CM Codes that Support Medical Necessity Group 1 Paragraph and the Frequency Limitations sections.

Also, the Frequency Limitations section is now titled Utilization Parameters with the addition of clarifying language for CPT codes 66989 and 66991.

Minor formatting changes have been made throughout the Article.

01/01/2020 R2

Article revised and published on 04/30/2020 for dates of service on and after 01/01/2020. CPT codes 66987 and 66988 have been added to the Coding Guidance section for CPT code 0191T.

12/30/2019 R1

Future billing and coding Article related to L38223, Micro-Invasive Glaucoma Surgery (MIGS) published on November 14, 2019 and will become effective on December 30, 2019.

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Associated Documents

Medicare BPM Ch 15.50.2 SAD Determinations
Medicare BPM Ch 15.50.2
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Public Versions
Updated On Effective Dates Status
11/09/2023 10/07/2023 - N/A Currently in Effect You are here
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