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  6. 2024 ICD-10-CM Code H18.7

2024 ICD-10-CM Diagnosis Code H18.7

Other and unspecified corneal deformities

ICD-10-CM Code:
H18.7
ICD-10 Code for:
Other and unspecified corneal deformities
Is Billable?
Not Valid for Submission
Code Navigator:

Code Classification

  • Diseases of the eye and adnexa
    (H00–H59)
    • Disorders of sclera, cornea, iris and ciliary body
      (H15-H22)
      • Other disorders of cornea
        (H18)

H18.7 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of other and unspecified corneal deformities. The code is not specific and is NOT valid for the year 2024 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.

Unspecified diagnosis codes like H18.7 are acceptable when clinical information is unknown or not available about a particular condition. Although a more specific code is preferable, unspecified codes should be used when such codes most accurately reflect what is known about a patient's condition. Specific diagnosis codes should not be used if not supported by the patient's medical record.

Specific Coding Applicable to Other and unspecified corneal deformities

Non-specific codes like H18.7 require more digits to indicate the appropriate level of specificity. Consider using any of the following ICD-10-CM codes with a higher level of specificity when coding for other and unspecified corneal deformities:

  • Use H18.70 for Unspecified corneal deformity - BILLABLE CODE

  • H18.71 for Corneal ectasia - NON-BILLABLE CODE

  • Use H18.711 for Corneal ectasia, right eye - BILLABLE CODE

  • Use H18.712 for Corneal ectasia, left eye - BILLABLE CODE

  • Use H18.713 for Corneal ectasia, bilateral - BILLABLE CODE

  • Use H18.719 for Corneal ectasia, unspecified eye - BILLABLE CODE

  • H18.72 for Corneal staphyloma - NON-BILLABLE CODE

  • Use H18.721 for Corneal staphyloma, right eye - BILLABLE CODE

  • Use H18.722 for Corneal staphyloma, left eye - BILLABLE CODE

  • Use H18.723 for Corneal staphyloma, bilateral - BILLABLE CODE

  • Use H18.729 for Corneal staphyloma, unspecified eye - BILLABLE CODE

  • H18.73 for Descemetocele - NON-BILLABLE CODE

  • Use H18.731 for Descemetocele, right eye - BILLABLE CODE

  • Use H18.732 for Descemetocele, left eye - BILLABLE CODE

  • Use H18.733 for Descemetocele, bilateral - BILLABLE CODE

  • Use H18.739 for Descemetocele, unspecified eye - BILLABLE CODE

  • H18.79 for Other corneal deformities - NON-BILLABLE CODE

  • Use H18.791 for Other corneal deformities, right eye - BILLABLE CODE

  • Use H18.792 for Other corneal deformities, left eye - BILLABLE CODE

  • Use H18.793 for Other corneal deformities, bilateral - BILLABLE CODE

  • Use H18.799 for Other corneal deformities, unspecified eye - BILLABLE CODE

Tabular List of Diseases and Injuries

The following annotation back-references are applicable to this diagnosis code. The Tabular List of Diseases and Injuries is a list of ICD-10-CM codes, organized "head to toe" into chapters and sections with coding notes and guidance for inclusions, exclusions, descriptions and more.


Type 1 Excludes

Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.

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:

  • 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


[Learn More in MedlinePlus]

Code History

  • FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
  • FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
  • FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
  • 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. This was the first year ICD-10-CM was implemented into the HIPAA code set.