ICD-10-CM Code H16.3

Interstitial and deep keratitis

Version 2021 Non-Billable Code

Not Valid for Submission

H16.3 is a "header" nonspecific and non-billable code code, consider using a code with a higher level of specificity for a diagnosis of interstitial and deep keratitis. The code is NOT valid for the year 2021 for the submission of HIPAA-covered transactions.

ICD-10:H16.3
Short Description:Interstitial and deep keratitis
Long Description:Interstitial and deep keratitis

Consider the following ICD-10 codes with a higher level of specificity:

  • H16.30 - Unspecified interstitial keratitis
  • H16.301 - Unspecified interstitial keratitis, right eye
  • H16.302 - Unspecified interstitial keratitis, left eye
  • H16.303 - Unspecified interstitial keratitis, bilateral
  • H16.309 - Unspecified interstitial keratitis, unspecified eye
  • H16.31 - Corneal abscess
  • H16.311 - Corneal abscess, right eye
  • H16.312 - Corneal abscess, left eye
  • H16.313 - Corneal abscess, bilateral
  • H16.319 - Corneal abscess, unspecified eye
  • H16.32 - Diffuse interstitial keratitis
  • H16.321 - Diffuse interstitial keratitis, right eye
  • H16.322 - Diffuse interstitial keratitis, left eye
  • H16.323 - Diffuse interstitial keratitis, bilateral
  • H16.329 - Diffuse interstitial keratitis, unspecified eye
  • H16.33 - Sclerosing keratitis
  • H16.331 - Sclerosing keratitis, right eye
  • H16.332 - Sclerosing keratitis, left eye
  • H16.333 - Sclerosing keratitis, bilateral
  • H16.339 - Sclerosing keratitis, unspecified eye
  • H16.39 - Other interstitial and deep keratitis
  • H16.391 - Other interstitial and deep keratitis, right eye
  • H16.392 - Other interstitial and deep keratitis, left eye
  • H16.393 - Other interstitial and deep keratitis, bilateral
  • H16.399 - Other interstitial and deep keratitis, unspecified eye

Code Classification

  • Diseases of the eye and adnexa (H00–H59)
    • Disorders of sclera, cornea, iris and ciliary body (H15-H22)
      • Keratitis (H16)

Code History

  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016
    (First year ICD-10-CM implemented into the HIPAA code set)
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021

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

  • Refractive errors
  • Allergies
  • Infections
  • Injuries
  • Dystrophies - conditions in which parts of the cornea lose clarity due to a buildup of cloudy material

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

NIH: National Eye Institute

  • Cloudy cornea (Medical Encyclopedia)
  • Corneal injury (Medical Encyclopedia)
  • Corneal transplant (Medical Encyclopedia)
  • Corneal ulcers and infections (Medical Encyclopedia)
  • Fuchs dystrophy (Medical Encyclopedia)
  • Keratoconus (Medical Encyclopedia)

[Learn More]