2021 ICD-10-CM Code H16.2

Keratoconjunctivitis

Version 2021
Non-Billable Code

Not Valid for Submission

H16.2 is a "header" nonspecific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of keratoconjunctivitis. 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:H16.2
Short Description:Keratoconjunctivitis
Long Description:Keratoconjunctivitis

Code Classification

Specific Coding for Keratoconjunctivitis

Header codes like H16.2 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 keratoconjunctivitis:

  • H16.20 - Unspecified keratoconjunctivitis
  • H16.201 - Unspecified keratoconjunctivitis, right eye
  • H16.202 - Unspecified keratoconjunctivitis, left eye
  • H16.203 - Unspecified keratoconjunctivitis, bilateral
  • H16.209 - Unspecified keratoconjunctivitis, unspecified eye
  • H16.21 - Exposure keratoconjunctivitis
  • H16.211 - Exposure keratoconjunctivitis, right eye
  • H16.212 - Exposure keratoconjunctivitis, left eye
  • H16.213 - Exposure keratoconjunctivitis, bilateral
  • H16.219 - Exposure keratoconjunctivitis, unspecified eye
  • H16.22 - Keratoconjunctivitis sicca, not specified as Sjogren's
  • H16.221 - Keratoconjunctivitis sicca, not specified as Sjogren's, right eye
  • H16.222 - Keratoconjunctivitis sicca, not specified as Sjogren's, left eye
  • H16.223 - Keratoconjunctivitis sicca, not specified as Sjogren's, bilateral
  • H16.229 - Keratoconjunctivitis sicca, not specified as Sjogren's, unspecified eye
  • H16.23 - Neurotrophic keratoconjunctivitis
  • H16.231 - Neurotrophic keratoconjunctivitis, right eye
  • H16.232 - Neurotrophic keratoconjunctivitis, left eye
  • H16.233 - Neurotrophic keratoconjunctivitis, bilateral
  • H16.239 - Neurotrophic keratoconjunctivitis, unspecified eye
  • H16.24 - Ophthalmia nodosa
  • H16.241 - Ophthalmia nodosa, right eye
  • H16.242 - Ophthalmia nodosa, left eye
  • H16.243 - Ophthalmia nodosa, bilateral
  • H16.249 - Ophthalmia nodosa, unspecified eye
  • H16.25 - Phlyctenular keratoconjunctivitis
  • H16.251 - Phlyctenular keratoconjunctivitis, right eye
  • H16.252 - Phlyctenular keratoconjunctivitis, left eye
  • H16.253 - Phlyctenular keratoconjunctivitis, bilateral
  • H16.259 - Phlyctenular keratoconjunctivitis, unspecified eye
  • H16.26 - Vernal keratoconjunctivitis, with limbar and corneal involvement
  • H16.261 - Vernal keratoconjunctivitis, with limbar and corneal involvement, right eye
  • H16.262 - Vernal keratoconjunctivitis, with limbar and corneal involvement, left eye
  • H16.263 - Vernal keratoconjunctivitis, with limbar and corneal involvement, bilateral
  • H16.269 - Vernal keratoconjunctivitis, with limbar and corneal involvement, unspecified eye
  • H16.29 - Other keratoconjunctivitis
  • H16.291 - Other keratoconjunctivitis, right eye
  • H16.292 - Other keratoconjunctivitis, left eye
  • H16.293 - Other keratoconjunctivitis, bilateral
  • H16.299 - Other keratoconjunctivitis, 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


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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)