H18.40
BillableUnspecified corneal degeneration
Unspecified corneal degeneration
Coding Notes
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
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)
Also Known As / Clinical Terms
SNOMED CT
- Corneal degeneration111521006
- Corneal epithelial degeneration231929005
- Corneal stromal degeneration419982005
- Bilateral corneal degeneration15735801000119102
- Degeneration of cornea of bilateral eyes15735801000119102
- Degeneration of cornea of both eyes15735801000119102
- Degeneration of cornea of left eye15735721000119100
- Degeneration of cornea of right eye450921000124103
Frequently Asked Questions
What is the ICD-10 code for unspecified corneal degeneration?
The ICD-10-CM code for unspecified corneal degeneration is H18.40. The full clinical description is "Unspecified corneal degeneration". H18.40 is a billable/specific code that can be used on insurance claims and medical billing.
What does ICD-10 code H18.40 mean?
ICD-10-CM code H18.40 represents "Unspecified corneal degeneration". It is classified under Chapter 7: Diseases of the Eye and Adnexa and is a billable/specific code that can be used on a claim.
Is H18.40 a billable code?
Yes, H18.40 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.
What chapter is H18.40 in?
H18.40 is in Chapter 7: Diseases of the Eye and Adnexa (codes H00-H59).
What codes cannot be used with H18.40?
H18.40 has Excludes1 notes indicating codes that cannot be used together with it, including: Mooren's ulcer (H16.0-); recurrent erosion of cornea (H18.83-).
What SNOMED CT codes does H18.40 map to?
H18.40 maps to 6 SNOMED CT concepts: 15735801000119102, 111521006, 231929005, 419982005, 15735721000119100, and 1 more. SNOMED CT is a clinical terminology used in electronic health records.
What are the UMLS CUIs for H18.40?
H18.40 is linked to 1 UMLS Concept Unique Identifier: C0155118. 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.