H18.2 — Other and unspecified corneal edema
Is H18.2 billable?
No — H18.2 is a non-billable header code. H18.2 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 13 billable codes beneath H18.2.
Billable codes under this header
- H18.20Unspecified corneal edema
- H18.211Corneal edema secondary to contact lens, right eye
- H18.212Corneal edema secondary to contact lens, left eye
- H18.213Corneal edema secondary to contact lens, bilateral
- H18.219Corneal edema secondary to contact lens, unspecified eye
- H18.221Idiopathic corneal edema, right eye
- H18.222Idiopathic corneal edema, left eye
- H18.223Idiopathic corneal edema, bilateral
- H18.229Idiopathic corneal edema, unspecified eye
- H18.231Secondary corneal edema, right eye
- H18.232Secondary corneal edema, left eye
- H18.233Secondary corneal edema, bilateral
- H18.239Secondary corneal edema, unspecified eye
H18.2 at a glance
| Code | H18.2 |
|---|---|
| Description | Other and unspecified corneal edema |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
How is H18.2 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to H18.2. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Edema, edematous › cornea (infectious) (pitting) (toxic)
Excludes2 — not included here — inherited from Chapter 7
The conditions below are not part of H18.2, but a patient may have both at the same time. When documentation supports it, H18.2 and the excluded code may both be reported.
- 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)
What codes fall under H18.2? (4)
How long has H18.2 existed?
H18.2 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.
Which conditions are coded to H18.2?
What other codes are in the H18 family? (9)
- H18.0Corneal pigmentations and depositsnot billable
- H18.1Bullous keratopathynot billable
- H18.3Changes of corneal membranesnot billable
- H18.4Corneal degenerationnot billable
- H18.5Hereditary corneal dystrophiesnot billable
- H18.6Keratoconusnot billable
- H18.7Other and unspecified corneal deformitiesnot billable
- H18.8Other specified disorders of corneanot billable
- H18.9Unspecified disorder of cornea