ICD10
ICD-10 Code H18.8: Other specified disorders of cornea
Reviewed by HealthAssure Clinical TeamUpdated 26 May 2026
What is this code?
ICD-10 entries help standardize how diagnoses are organized for coding, reporting, analytics, and documentation. This code sits within the broader ICD-10 area for Diseases of the eye and adnexa (H00-H59).
When is it used?
- May be used when a clinician documents other specified disorders of cornea in a patient's medical record.
- May appear in hospital records, claims, referrals, and clinical documentation.
- This code may act more like a grouping or parent code, so a more specific child code may be used in final documentation when available.
What it does not mean
- A code alone does not explain severity, treatment plan, or outcome.
- A medical code should not be treated as a substitute for a doctor's diagnosis or advice.
- This entry may represent a broader category rather than the most specific billable code.
Code hierarchy
chapter
7Diseases of the eye and adnexa (H00-H59)
block
H15-H22Disorders of sclera, cornea, iris and ciliary body
category
H18Other disorders of cornea
currentH18
Where you may see this code
You may see this entry in coding references, medical records, or claims workflows when a broader diagnosis category is being reviewed before a more specific code is chosen.
Related specialists
Ophthalmologist
Related codes
H18.0Corneal pigmentations and depositscategoryH18.1Bullous keratopathycategoryH18.2Other and unspecified corneal edemacategoryH18.3Changes of corneal membranescategoryH18.4Corneal degenerationcategoryH18.5Hereditary corneal dystrophiescategoryH18.6KeratoconuscategoryH18.7Other and unspecified corneal deformitiescategoryH18.9Unspecified disorder of corneacode
Sibling codes
H18.0Corneal pigmentations and depositsH18.1Bullous keratopathyH18.2Other and unspecified corneal edemaH18.3Changes of corneal membranesH18.4Corneal degenerationH18.5Hereditary corneal dystrophiesH18.6KeratoconusH18.7Other and unspecified corneal deformitiesH18.9Unspecified disorder of corneabillable
Mapped diagnoses and classifications
SNOMED_CT 112220008high
Abnormal corneal reflex
Source: SNOMED International ICD-10 map
SNOMED_CT 679081000119106high
Bilateral corneal xerosis
Source: SNOMED International ICD-10 map
SNOMED_CT 746913791000119104high
Bilateral limbal stem cell deficiency
Source: SNOMED International ICD-10 map
SNOMED_CT 344121000119102high
Bilateral recurrent erosion of cornea
Source: SNOMED International ICD-10 map
SNOMED_CT 413806004high
Central topographic island
Source: SNOMED International ICD-10 map
SNOMED_CT 95735008high
Clouding of corneal stroma
Source: SNOMED International ICD-10 map
Coding guidelines
Compatibility
Legacy code aligns to an official FY 2026 category. Frontend should resolve to the official category page and surface the billable child codes.
Legacy codes
H18.8
Common synonyms
Other specified disorders of cornea
Frequently asked questions
About this content
This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.