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 period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
- diabetes mellitus related eye conditions (E09.3-, E10.3-, E11.3-, E13.3-)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury (trauma) of eye and orbit (S05.-)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-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
Also Known As / Clinical Terms
Frequently Asked Questions
What is ICD-10 code H18?
ICD-10-CM code H18 represents "Other disorders of cornea". It 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.
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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.