2024 ICD-10-CM Diagnosis Code H18.899

Other specified disorders of cornea, unspecified eye

ICD-10-CM Code:
H18.899
ICD-10 Code for:
Other specified disorders of cornea, unspecified eye
Is Billable?
Yes - Valid for Submission
Chronic Condition Indicator: [1]
Not chronic
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)

H18.899 is a billable diagnosis code used to specify a medical diagnosis of other specified disorders of cornea, unspecified eye. The code is valid during the current fiscal year for the submission of HIPAA-covered transactions from October 01, 2023 through September 30, 2024.

Unspecified diagnosis codes like H18.899 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.

Approximate Synonyms

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

  • Benign neoplasm of cornea
  • Blister to cornea
  • Bowman's membrane finding
  • Central corneal epithelial staining pattern
  • Chrysiasis of cornea
  • Clear corneal incision
  • Clouding of corneal stroma
  • Coats' white ring
  • Complication of laser surgery
  • Complication of refractive keratoplasty by laser surgery
  • Cornea stromal loss
  • Corneal central stromal loss
  • Corneal decompensation
  • Corneal dendrite
  • Corneal endothelial plaque
  • Corneal epithelial defect
  • Corneal epithelial defect
  • Corneal epithelial defect following penetrating keratoplasty
  • Corneal epithelial dots
  • Corneal epithelial fingerprint lines
  • Corneal epithelial ingrowth
  • Corneal epithelial lines
  • Corneal epithelial map lines
  • Corneal epithelial staining finding
  • Corneal epithelial staining finding
  • Corneal epithelial staining finding
  • Corneal epithelial staining finding
  • Corneal epithelial staining finding
  • Corneal epithelial vesicles
  • Corneal epithelium loose
  • Corneal exposure
  • Corneal fibrosis
  • Corneal filament
  • Corneal hemorrhage
  • Corneal hypoxia
  • Corneal immune ring
  • Corneal incision intact
  • Corneal infection
  • Corneal iron deposits
  • Corneal melting disorder
  • Corneal nerve finding
  • Corneal nerve finding
  • Corneal nerves inflamed
  • Corneal nerves thickened
  • Corneal peripheral stromal loss
  • Corneal stromal wrinkles
  • Corneal suture in place
  • Corneal thinning
  • Corneal warpage
  • Debris in corneal flap interface
  • Decentered corneal stromal ablation
  • Dermoid cyst of cornea
  • Dermoid cyst of eye proper
  • Disruption of corneal endothelial pattern
  • Drug-induced disorder of cornea
  • EDICT syndrome
  • Enlargement of corneal endothelial cells
  • Entire corneal epithelial staining pattern
  • Epithelial inclusion cyst of cornea
  • Epithelial ingrowth
  • Ferry's line
  • Finding of tear meniscus
  • Fluorescein staining of cornea
  • High tear meniscus
  • Hypertrophy of corneal epithelium
  • Irregular astigmatism
  • Irregular astigmatism - corneal
  • Irregular corneal epithelial staining pattern
  • Keratic precipitates
  • Keratinization of ocular surface
  • Limbal corneal ring
  • Limbal guttering
  • Limbal guttering - simple
  • Limbal stem cell deficiency
  • Lump at corneal limbus
  • Marginal corneal infiltrate
  • Metallic pigmentation of cornea
  • Perforating corneoscleral wound
  • Perforation of cornea
  • Peripheral corneal epithelial staining pattern
  • Persistent corneal epithelial defect
  • Posterior polymorphic plaques in cornea
  • Pseudo-gerontoxon
  • Retrocorneal fibrous membrane
  • Rheumatoid melting disorder of cornea
  • Ring dermoid of cornea
  • Stromal corneal hemorrhage
  • Tear film finding
  • Vogt's limbal girdle
  • Vogt's limbal girdle, type I
  • Vogt's limbal girdle, type II
  • Vogt's striae
  • Vortex keratopathy

Clinical Classification

Clinical Information

  • Limbal Stem Cell Deficiency

    loss or disturbance of limbal stem cell function in the corneal limbus resulting in inability to self-renew corneal epithelium and conjunctivalized corneal surface.
  • Corneal Warpage

    a change in the shape of the corneal surface presenting as abnormal radial symmetry.
  • Corneal Thinning

    progressive deformation of the corneal structure, characterized by thinning of the cornea.

Convert H18.899 to ICD-9-CM

  • ICD-9-CM Code: 371.89 - Corneal disorder NEC
    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:

  • 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.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.