Version 2024

2024 ICD-10-CM Diagnosis Code H40.6

Glaucoma secondary to drugs

ICD-10-CM Code:
H40.6
ICD-10 Code for:
Glaucoma secondary to drugs
Is Billable?
Not Valid for Submission
Code Navigator:

Code Classification

H40.6 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of glaucoma secondary to drugs. The code is not specific and is NOT valid for the year 2024 for the submission of HIPAA-covered transactions. Category or Header define the heading of a category of codes that may be further subdivided by the use of 4th, 5th, 6th or 7th characters.

Specific Coding Applicable to Glaucoma secondary to drugs

Non-specific codes like H40.6 require more digits to indicate the appropriate level of specificity. Consider using any of the following ICD-10-CM codes with a higher level of specificity when coding for glaucoma secondary to drugs:

  • H40.60 for Glaucoma secondary to drugs, unspecified eye - NON-BILLABLE CODE

  • Use H40.60X0 for stage unspecified - BILLABLE CODE

  • Use H40.60X1 for mild stage - BILLABLE CODE

  • Use H40.60X2 for moderate stage - BILLABLE CODE

  • Use H40.60X3 for severe stage - BILLABLE CODE

  • Use H40.60X4 for indeterminate stage - BILLABLE CODE

  • H40.61 for Glaucoma secondary to drugs, right eye - NON-BILLABLE CODE

  • Use H40.61X0 for stage unspecified - BILLABLE CODE

  • Use H40.61X1 for mild stage - BILLABLE CODE

  • Use H40.61X2 for moderate stage - BILLABLE CODE

  • Use H40.61X3 for severe stage - BILLABLE CODE

  • Use H40.61X4 for indeterminate stage - BILLABLE CODE

  • H40.62 for Glaucoma secondary to drugs, left eye - NON-BILLABLE CODE

  • Use H40.62X0 for stage unspecified - BILLABLE CODE

  • Use H40.62X1 for mild stage - BILLABLE CODE

  • Use H40.62X2 for moderate stage - BILLABLE CODE

  • Use H40.62X3 for severe stage - BILLABLE CODE

  • Use H40.62X4 for indeterminate stage - BILLABLE CODE

  • H40.63 for Glaucoma secondary to drugs, bilateral - NON-BILLABLE CODE

  • Use H40.63X0 for stage unspecified - BILLABLE CODE

  • Use H40.63X1 for mild stage - BILLABLE CODE

  • Use H40.63X2 for moderate stage - BILLABLE CODE

  • Use H40.63X3 for severe stage - BILLABLE CODE

  • Use H40.63X4 for indeterminate stage - BILLABLE CODE

Clinical Information

  • Exfoliation Syndrome

    the deposition of flaky, translucent fibrillar material most conspicuous on the anterior lens capsule and pupillary margin but also in both surfaces of the iris, the zonules, trabecular meshwork, ciliary body, corneal endothelium, and orbital blood vessels. it sometimes forms a membrane on the anterior iris surface. exfoliation refers to the shedding of pigment by the iris. (newell, ophthalmology, 7th ed, p380)
  • Glaucoma

    an ocular disease, occurring in many forms, having as its primary characteristics an unstable or a sustained increase in the intraocular pressure which the eye cannot withstand without damage to its structure or impairment of its function. the consequences of the increased pressure may be manifested in a variety of symptoms, depending upon type and severity, such as excavation of the optic disk, hardness of the eyeball, corneal anesthesia, reduced visual acuity, seeing of colored halos around lights, disturbed dark adaptation, visual field defects, and headaches. (dictionary of visual science, 4th ed)
  • Glaucoma Drainage Implants

    devices, usually incorporating unidirectional valves, which are surgically inserted in the sclera to maintain normal intraocular pressure.
  • Glaucoma, Angle-Closure

    a form of glaucoma in which the intraocular pressure increases because the angle of the anterior chamber is blocked and the aqueous humor cannot drain from the anterior chamber.
  • Glaucoma, Neovascular

    a form of secondary glaucoma which develops as a consequence of another ocular disease and is attributed to the forming of new vessels in the angle of the anterior chamber.
  • Glaucoma, Open-Angle

    glaucoma in which the angle of the anterior chamber is open and the trabecular meshwork does not encroach on the base of the iris.
  • Low Tension Glaucoma

    a form of glaucoma in which chronic optic nerve damage and loss of vision normally attributable to buildup of intraocular pressure occurs despite prevailing conditions of normal intraocular pressure.
  • Ocular Hypertension

    a condition in which the intraocular pressure is elevated above normal and which may lead to glaucoma.
  • Weill-Marchesani Syndrome

    rare congenital disorder of connective tissue characterized by brachydactyly, joint stiffness, childhood onset of ocular abnormalities (e.g., microspherophakia, ectopia lentis; glaucoma), and proportionate short stature. cardiovascular anomalies are occasionally seen.

Tabular List of Diseases and Injuries

The following annotation back-references are applicable to this diagnosis code. The Tabular List of Diseases and Injuries is a list of ICD-10-CM codes, organized "head to toe" into chapters and sections with coding notes and guidance for inclusions, exclusions, descriptions and more.


Use Additional Code

Use Additional Code
The “use additional code” indicates that a secondary code could be used to further specify the patient’s condition. This note is not mandatory and is only used if enough information is available to assign an additional code.
  • code for adverse effect, if applicable, to identify drug T36 T50

7th Character Note

7th Character Note
Certain ICD-10-CM categories have applicable 7th characters. The applicable 7th character is required for all codes within the category, or as the notes in the Tabular List instruct. The 7th character must always be the 7th character in the data field. If a code that requires a 7th character is not 6 characters, a placeholder X must be used to fill in the empty characters.
  • One of the following 7th characters is to be assigned to each code in subcategory H40.6 to designate the stage of glaucoma

7th Character

7th Character
Indicates that a seventh character is to be assigned to codes in a subcategory.
  • 0 - stage unspecified
  • 1 - mild stage
  • 2 - moderate stage
  • 3 - severe stage
  • 4 - indeterminate stage

Index to Diseases and Injuries References

The following annotation back-references for this diagnosis code are found in the injuries and diseases index. The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10-CM code(s).

Patient Education


Glaucoma

Glaucoma is a group of diseases that can damage the eye's optic nerve. It is a leading cause of blindness in the United States. It usually happens when the fluid pressure inside the eyes slowly rises, damaging the optic nerve. Often there are no symptoms at first. Without treatment, people with glaucoma will slowly lose their peripheral, or side vision. They seem to be looking through a tunnel. Over time, straight-ahead vision may decrease until no vision remains.

A comprehensive eye exam can tell if you have glaucoma. People at risk should get eye exams at least every two years. They include:

  • African Americans over age 40
  • People over age 60, especially Mexican Americans
  • People with a family history of glaucoma

There is no cure, but glaucoma can usually be controlled. Early treatment can help protect your eyes against vision loss. Treatments usually include prescription eyedrops and/or surgery.

NIH: National Eye Institute


[Learn More in MedlinePlus]

Code History

  • FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
  • FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
  • FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016. This was the first year ICD-10-CM was implemented into the HIPAA code set.