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  6. 2024 ICD-10-CM Code H40.2
Version 2024
Non-Billable Code

2024 ICD-10-CM Diagnosis Code H40.2

Primary angle-closure glaucoma

ICD-10-CM Code:
H40.2
ICD-10 Code for:
Primary angle-closure glaucoma
Is Billable?
Not Valid for Submission
Code Navigator:

Code Classification

H40.2 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of primary angle-closure glaucoma. 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 Primary angle-closure glaucoma

Non-specific codes like H40.2 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 primary angle-closure glaucoma:

  • H40.20 for Unspecified primary angle-closure glaucoma - NON-BILLABLE CODE

  • Use H40.20X0 for stage unspecified - BILLABLE CODE

  • Use H40.20X1 for mild stage - BILLABLE CODE

  • Use H40.20X2 for moderate stage - BILLABLE CODE

  • Use H40.20X3 for severe stage - BILLABLE CODE

  • Use H40.20X4 for indeterminate stage - BILLABLE CODE

  • H40.21 for Acute angle-closure glaucoma - NON-BILLABLE CODE

  • Use H40.211 for Acute angle-closure glaucoma, right eye - BILLABLE CODE

  • Use H40.212 for Acute angle-closure glaucoma, left eye - BILLABLE CODE

  • Use H40.213 for Acute angle-closure glaucoma, bilateral - BILLABLE CODE

  • Use H40.219 for Acute angle-closure glaucoma, unspecified eye - BILLABLE CODE

  • H40.22 for Chronic angle-closure glaucoma - NON-BILLABLE CODE

  • H40.221 for Chronic angle-closure glaucoma, right eye - NON-BILLABLE CODE

  • Use H40.2210 for stage unspecified - BILLABLE CODE

  • Use H40.2211 for mild stage - BILLABLE CODE

  • Use H40.2212 for moderate stage - BILLABLE CODE

  • Use H40.2213 for severe stage - BILLABLE CODE

  • Use H40.2214 for indeterminate stage - BILLABLE CODE

  • H40.222 for Chronic angle-closure glaucoma, left eye - NON-BILLABLE CODE

  • Use H40.2220 for stage unspecified - BILLABLE CODE

  • Use H40.2221 for mild stage - BILLABLE CODE

  • Use H40.2222 for moderate stage - BILLABLE CODE

  • Use H40.2223 for severe stage - BILLABLE CODE

  • Use H40.2224 for indeterminate stage - BILLABLE CODE

  • H40.223 for Chronic angle-closure glaucoma, bilateral - NON-BILLABLE CODE

  • Use H40.2230 for stage unspecified - BILLABLE CODE

  • Use H40.2231 for mild stage - BILLABLE CODE

  • Use H40.2232 for moderate stage - BILLABLE CODE

  • Use H40.2233 for severe stage - BILLABLE CODE

  • Use H40.2234 for indeterminate stage - BILLABLE CODE

  • H40.229 for Chronic angle-closure glaucoma, unspecified eye - NON-BILLABLE CODE

  • Use H40.2290 for stage unspecified - BILLABLE CODE

  • Use H40.2291 for mild stage - BILLABLE CODE

  • Use H40.2292 for moderate stage - BILLABLE CODE

  • Use H40.2293 for severe stage - BILLABLE CODE

  • Use H40.2294 for indeterminate stage - BILLABLE CODE

  • H40.23 for Intermittent angle-closure glaucoma - NON-BILLABLE CODE

  • Use H40.231 for Intermittent angle-closure glaucoma, right eye - BILLABLE CODE

  • Use H40.232 for Intermittent angle-closure glaucoma, left eye - BILLABLE CODE

  • Use H40.233 for Intermittent angle-closure glaucoma, bilateral - BILLABLE CODE

  • Use H40.239 for Intermittent angle-closure glaucoma, unspecified eye - BILLABLE CODE

  • H40.24 for Residual stage of angle-closure glaucoma - NON-BILLABLE CODE

  • Use H40.241 for Residual stage of angle-closure glaucoma, right eye - BILLABLE CODE

  • Use H40.242 for Residual stage of angle-closure glaucoma, left eye - BILLABLE CODE

  • Use H40.243 for Residual stage of angle-closure glaucoma, bilateral - BILLABLE CODE

  • Use H40.249 for Residual stage of angle-closure glaucoma, 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.

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.


Type 1 Excludes

Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.

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.