H16.421 - Pannus (corneal), right eye

Version 2023
ICD-10:H16.421
Short Description:Pannus (corneal), right eye
Long Description:Pannus (corneal), right eye
Status: Valid for Submission
Version:ICD-10-CM 2023
Code Classification:
  • Diseases of the eye and adnexa (H00–H59)
    • Disorders of sclera, cornea, iris and ciliary body (H15-H22)
      • Keratitis (H16)

H16.421 is a billable ICD-10 code used to specify a medical diagnosis of pannus (corneal), right eye. The code is valid during the fiscal year 2023 from October 01, 2022 through September 30, 2023 for the submission of HIPAA-covered transactions.

Approximate Synonyms

The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

Clinical Information

Convert to ICD-9 Code

Source ICD-10 CodeTarget ICD-9 Code
H16.421370.62 - Corneal pannus
Approximate Flag - The approximate mapping means there is not an exact match between the ICD-10 and ICD-9 codes and the mapped code is not a precise representation of the original code.

Patient Education


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 in MedlinePlus]

Code History