Version 2024

2024 ICD-10-CM Diagnosis Code H40.0

Glaucoma suspect

ICD-10-CM Code:
H40.0
ICD-10 Code for:
Glaucoma suspect
Is Billable?
Not Valid for Submission
Code Navigator:

Code Classification

H40.0 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 suspect. 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 suspect

Non-specific codes like H40.0 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 suspect:

  • H40.00 for Preglaucoma, unspecified - NON-BILLABLE CODE

  • Use H40.001 for Preglaucoma, unspecified, right eye - BILLABLE CODE

  • Use H40.002 for Preglaucoma, unspecified, left eye - BILLABLE CODE

  • Use H40.003 for Preglaucoma, unspecified, bilateral - BILLABLE CODE

  • Use H40.009 for Preglaucoma, unspecified, unspecified eye - BILLABLE CODE

  • H40.01 for Open angle with borderline findings, low risk - NON-BILLABLE CODE

  • Use H40.011 for Open angle with borderline findings, low risk, right eye - BILLABLE CODE

  • Use H40.012 for Open angle with borderline findings, low risk, left eye - BILLABLE CODE

  • Use H40.013 for Open angle with borderline findings, low risk, bilateral - BILLABLE CODE

  • Use H40.019 for Open angle with borderline findings, low risk, unspecified eye - BILLABLE CODE

  • H40.02 for Open angle with borderline findings, high risk - NON-BILLABLE CODE

  • Use H40.021 for Open angle with borderline findings, high risk, right eye - BILLABLE CODE

  • Use H40.022 for Open angle with borderline findings, high risk, left eye - BILLABLE CODE

  • Use H40.023 for Open angle with borderline findings, high risk, bilateral - BILLABLE CODE

  • Use H40.029 for Open angle with borderline findings, high risk, unspecified eye - BILLABLE CODE

  • H40.03 for Anatomical narrow angle - NON-BILLABLE CODE

  • Use H40.031 for Anatomical narrow angle, right eye - BILLABLE CODE

  • Use H40.032 for Anatomical narrow angle, left eye - BILLABLE CODE

  • Use H40.033 for Anatomical narrow angle, bilateral - BILLABLE CODE

  • Use H40.039 for Anatomical narrow angle, unspecified eye - BILLABLE CODE

  • H40.04 for Steroid responder - NON-BILLABLE CODE

  • Use H40.041 for Steroid responder, right eye - BILLABLE CODE

  • Use H40.042 for Steroid responder, left eye - BILLABLE CODE

  • Use H40.043 for Steroid responder, bilateral - BILLABLE CODE

  • Use H40.049 for Steroid responder, unspecified eye - BILLABLE CODE

  • H40.05 for Ocular hypertension - NON-BILLABLE CODE

  • Use H40.051 for Ocular hypertension, right eye - BILLABLE CODE

  • Use H40.052 for Ocular hypertension, left eye - BILLABLE CODE

  • Use H40.053 for Ocular hypertension, bilateral - BILLABLE CODE

  • Use H40.059 for Ocular hypertension, unspecified eye - BILLABLE CODE

  • H40.06 for Primary angle closure without glaucoma damage - NON-BILLABLE CODE

  • Use H40.061 for Primary angle closure without glaucoma damage, right eye - BILLABLE CODE

  • Use H40.062 for Primary angle closure without glaucoma damage, left eye - BILLABLE CODE

  • Use H40.063 for Primary angle closure without glaucoma damage, bilateral - BILLABLE CODE

  • Use H40.069 for Primary angle closure without glaucoma damage, unspecified eye - 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.

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.