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  6. 2026 ICD-10-CM Code H40.84

2026 ICD-10-CM Diagnosis Code H40.84

Neovascular secondary angle closure glaucoma

ICD-10-CM Code:
H40.84
ICD-10 Code for:
Neovascular secondary angle closure glaucoma
Is Billable?
Not Valid for Submission
Code Navigator:

H40.84 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of neovascular secondary angle closure glaucoma. The code is not specific and is NOT valid for the year 2026 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 Neovascular secondary angle closure glaucoma

Non-specific codes like H40.84 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 neovascular secondary angle closure glaucoma:

  • Use H40.841 for Neovascular secondary angle closure glaucoma, right eye - BILLABLE CODE

  • Use H40.842 for Neovascular secondary angle closure glaucoma, left eye - BILLABLE CODE

  • Use H40.843 for Neovascular secondary angle closure glaucoma, bilateral - BILLABLE CODE

  • Use H40.849 for Neovascular secondary angle closure glaucoma, unspecified eye - BILLABLE CODE

Code Classification

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.

Replaced Code

This code was replaced in the 2026 ICD-10-CM code set with the code(s) listed below. The National Center for Health Statistics (NCHS) has published an update to the ICD-10-CM diagnosis codes which became effective October 1, 2025. This code was replaced for the FY 2026 (October 1, 2025 - September 30, 2026).


  • H40.841 - Neovascular secondary angle closure glaucoma, right eye
  • H40.841 - Neovascular secondary angle closure glaucoma, right eye
  • H40.841 - Neovascular secondary angle closure glaucoma, right eye
  • H40.841 - Neovascular secondary angle closure glaucoma, right eye
  • H40.842 - Neovascular secondary angle closure glaucoma, left eye
  • H40.842 - Neovascular secondary angle closure glaucoma, left eye
  • H40.842 - Neovascular secondary angle closure glaucoma, left eye
  • H40.842 - Neovascular secondary angle closure glaucoma, left eye
  • H40.843 - Neovascular secondary angle closure glaucoma, bilateral
  • H40.843 - Neovascular secondary angle closure glaucoma, bilateral
  • H40.843 - Neovascular secondary angle closure glaucoma, bilateral
  • H40.843 - Neovascular secondary angle closure glaucoma, bilateral
  • H40.849 - Neovascular secondary angle closure glaucoma, unsp
  • H40.849 - Neovascular secondary angle closure glaucoma, unsp
  • H40.849 - Neovascular secondary angle closure glaucoma, unsp
  • H40.849 - Neovascular secondary angle closure glaucoma, unsp

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.


Code First

Code First
Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions, the ICD-10-CM has a coding convention that requires the underlying condition be sequenced first followed by the manifestation. Wherever such a combination exists, there is a "use additional code" note at the etiology code, and a "code first" note at the manifestation code. These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation.

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).

Index of External Cause of Injuries

References found for this diagnosis code in the External Cause of Injuries Index:

    • Glaucoma
      • angle-closure (primary)
        • secondary, neovascular
    • Glaucoma
      • neovascular secondary angle closure

Code History

  • FY 2026 - No Change, effective from 10/1/2025 through 9/30/2026