ICD-10 Diagnosis Code H16.8

Other keratitis

Diagnosis Code H16.8

ICD-10: H16.8
Short Description: Other keratitis
Long Description: Other keratitis
This is the 2019 version of the ICD-10-CM diagnosis code H16.8

Valid for Submission
The code H16.8 is valid for submission for HIPAA-covered transactions.

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

Version 2019 Billable Code Unacceptable Principal Diagnosis

Information for Medical Professionals

Code Edits
The following edits are applicable to this code:
Unacceptable principal diagnosis - There are selected codes that describe a circumstance which influences an individual’s health status but not a current illness or injury, or codes that are not specific manifestations but may be due to an underlying cause. These codes are considered unacceptable as a principal diagnosis.

Diagnostic Related Groups
The diagnosis code H16.8 is grouped in the following Diagnostic Related Group(s) (MS-DRG V35.0)


Convert to ICD-9
  • 370.8 - Keratitis NEC (Approximate Flag)

  • Autoimmune keratitis
  • Autosomal dominant keratitis
  • Bacterial keratitis
  • Bullous keratopathy
  • Chemical injury to cornea
  • Chemical keratitis
  • Contact lens related sterile keratitis
  • Corneal inflammatory stromal infiltration
  • Diffuse lamellar keratitis
  • Disorder of cornea associated with contact lens
  • Enlargement of corneal endothelial cells
  • Eosinophilic keratitis
  • Focal stromal keratitis
  • Fungal keratitis
  • Fusarium infection
  • Granulomatous keratitis
  • Inflammatory pseudoguttae
  • Intrauterine keratitis
  • Keratitis bullosa
  • Keratitis due to trauma
  • Lyme keratitis
  • Marginal keratitis
  • Microsporidia keratitis
  • Mycobacterial keratitis
  • Mycotic keratitis due to Fusarium
  • Mycotic keratitis due to Fusarium oxysporum
  • Mycotic keratitis due to Fusarium solani
  • Necrotizing keratitis
  • Pigmentary keratitis
  • Pox virus infection of skin
  • Sclerokeratitis
  • Sterile keratitis
  • Vaccinia
  • Vaccinia keratitis
  • Viral keratitis
  • Xerotic keratitis

Index to Diseases and Injuries
References found for the code H16.8 in the Index to Diseases and Injuries:

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)

[Read More]

ICD-10 Footnotes

General Equivalence Map Definitions
The ICD-10 and ICD-9 GEMs are used to facilitate linking between the diagnosis codes in ICD-9-CM and the new ICD-10-CM code set. The GEMs are the raw material from which providers, health information vendors and payers can derive specific applied mappings to meet their needs.

  • Approximate Flag - The approximate flag is on, indicating that the relationship between the code in the source system and the code in the target system is an approximate equivalent.
  • No Map Flag - The no map flag indicates that a code in the source system is not linked to any code in the target system.
  • Combination Flag - The combination flag indicates that more than one code in the target system is required to satisfy the full equivalent meaning of a code in the source system.

Present on Admission
The Present on Admission (POA) indicator is used for diagnosis codes included in claims involving inpatient admissions to general acute care hospitals. POA indicators must be reported to CMS on each claim to facilitate the grouping of diagnoses codes into the proper Diagnostic Related Groups (DRG). CMS publishes a listing of specific diagnosis codes that are exempt from the POA reporting requirement.

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