H18
Non-billableOther disorders of cornea
Other disorders of cornea
This is a header/category code. For billing purposes, use a more specific child code from the list below.
Coding Notes
Excludes 2
Conditions not included here, but the patient may have both
- •certain conditions originating in the perinatal periodP04-P96
- •certain infectious and parasitic diseasesA00-B99
- •complications of pregnancy, childbirth and the puerperiumO9A)O00
- •congenital malformations, deformations, and chromosomal abnormalitiesQ00-Q99
- •diabetes mellitus related eye conditions, , ,E09.3, E10.3, E11.3, E13.3
- •endocrine, nutritional and metabolic diseasesE00-E88
- •injury (trauma) of eye and orbitS05
- •injury, poisoning and certain other consequences of external causesS00-T88
- •neoplasmsC00-D49
- •symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classifiedR00-R94
- •syphilis related eye disorders, , ,A50.01, A50.3, A51.43, A52.71
Child Codes (10)
H18.0Corneal pigmentations and deposits
H18.1Bullous keratopathy
H18.2Other and unspecified corneal edema
H18.3Changes of corneal membranes
H18.4Corneal degeneration
H18.5Hereditary corneal dystrophies
H18.6Keratoconus
H18.7Other and unspecified corneal deformities
H18.8Other specified disorders of cornea
H18.9Unspecified disorder of cornea
ICD-11 Equivalents(1)
ICD-11 Equivalents
View full mappingCorresponding ICD-11 codes from the WHO crosswalk mapping
Also Known As / Clinical Terms(2)
Frequently Asked Questions
What is the ICD-10 code for other disorders of cornea?
The ICD-10-CM code for other disorders of cornea is H18. The full clinical description is "Other disorders of cornea". H18 is a non-billable header code. Use a more specific child code for billing purposes.
What does ICD-10 code H18 mean?
ICD-10-CM code H18 represents “Other disorders of cornea”. It is classified under Chapter 7: Diseases of the Eye and Adnexa and is a non-billable header code. Use a more specific child code for billing purposes.
Is H18 a billable code?
No, H18 is a non-billable header code. You need to use one of its more specific child codes for billing. There are 10 child codes under H18.
What chapter is H18 in?
H18 is in Chapter 7: Diseases of the Eye and Adnexa (codes H00-H59).
What are the subcategories under H18?
H18 has 10 child codes, including: H18.0 (Corneal pigmentations and deposits), H18.1 (Bullous keratopathy), H18.2 (Other and unspecified corneal edema), H18.3 (Changes of corneal membranes), and 6 more.
What are the UMLS CUIs for H18?
H18 is linked to 1 UMLS Concept Unique Identifier: C0155137. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does H18 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like other disorders of cornea affect a person's functioning — body functions, activities, participation, and environmental factors. AutoICD provides ICF Core Sets for 12+ conditions and can map clinical text to ICF categories automatically. Browse the ICF directory to explore functioning codes.
What is the ICD-11 equivalent of H18?
H18 maps to the ICD-11 code: 9A78.8 (Recurrent erosion of cornea).
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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.