H18
H18 — Other disorders of cornea
Non-billable headerICD-10-CM
H18 is a non-billable header ICD-10-CM code for other disorders of cornea. It cannot be billed on its own: choose one of the more specific child codes below.
Other codes that can never be billed with H18
These codes carry an Excludes1 note pointing at H18. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading H18 alone.
- H18.4Corneal degeneration
Risk adjustment
H18 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
Code to one of these instead H18
10 child codes. Green means billable.
- 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
Questions about H18
- Is H18 a billable ICD-10-CM code?
- No. H18 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
- Where does H18 sit in the tabular list?
- Diseases of the eye and adnexa (H00-H59), in the block Disorders of sclera, cornea, iris and ciliary body (H15-H22).