2021 ICD-10-CM Code H16.4

Corneal neovascularization

Version 2021
Non-Billable Code

Not Valid for Submission

H16.4 is a "header" nonspecific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of corneal neovascularization. The code is NOT valid for the year 2021 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.

ICD-10:H16.4
Short Description:Corneal neovascularization
Long Description:Corneal neovascularization

Code Classification

Specific Coding for Corneal neovascularization

Header codes like H16.4 require more digits to indicate the appropriate level of specificity. Consider using any of the following ICD-10 codes with a higher level of specificity when coding for corneal neovascularization:

  • H16.40 - Unspecified corneal neovascularization
  • H16.401 - Unspecified corneal neovascularization, right eye
  • H16.402 - Unspecified corneal neovascularization, left eye
  • H16.403 - Unspecified corneal neovascularization, bilateral
  • H16.409 - Unspecified corneal neovascularization, unspecified eye
  • H16.41 - Ghost vessels (corneal)
  • H16.411 - Ghost vessels (corneal), right eye
  • H16.412 - Ghost vessels (corneal), left eye
  • H16.413 - Ghost vessels (corneal), bilateral
  • H16.419 - Ghost vessels (corneal), unspecified eye
  • H16.42 - Pannus (corneal)
  • H16.421 - Pannus (corneal), right eye
  • H16.422 - Pannus (corneal), left eye
  • H16.423 - Pannus (corneal), bilateral
  • H16.429 - Pannus (corneal), unspecified eye
  • H16.43 - Localized vascularization of cornea
  • H16.431 - Localized vascularization of cornea, right eye
  • H16.432 - Localized vascularization of cornea, left eye
  • H16.433 - Localized vascularization of cornea, bilateral
  • H16.439 - Localized vascularization of cornea, unspecified eye
  • H16.44 - Deep vascularization of cornea
  • H16.441 - Deep vascularization of cornea, right eye
  • H16.442 - Deep vascularization of cornea, left eye
  • H16.443 - Deep vascularization of cornea, bilateral
  • H16.449 - Deep vascularization of cornea, unspecified eye

Clinical Information

Information for Patients


Corneal Disorders

Your cornea is the outermost layer of your eye. It is clear and shaped like a dome. The cornea helps to shield the rest of the eye from germs, dust, and other harmful matter. It also helps your eye to focus. If you wear contact lenses, they float on top of your corneas.

Problems with the cornea include

Treatments of corneal disorders include medicines, corneal transplantation, and corneal laser surgery.

NIH: National Eye Institute


[Learn More]

Code History

  • 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 (First year ICD-10-CM implemented into the HIPAA code set)