Is H18.721 a billable ICD-10-CM code?

Yes. H18.721 is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does H18.721 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).

What cannot be coded together with H18.721?

H18.721 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above H18.721 (H18.7) and apply to it just the same.

H18.721

H18.721 — Corneal staphyloma, right eye

Billable / specific codeICD-10-CMright

H18.721 is a billable, specific ICD-10-CM code for corneal staphyloma, right eye. It is valid for submission on a claim.

Excludes1 inherited from the categories above H18.721

These are not written on H18.721, but they bind it: a note on a category applies to every code beneath it. Billing H18.721 with anything listed here is a denial.

Written on H18.7 — Other and unspecified corneal deformities

congenital malformations of cornea (Q13.3-Q13.4)

Risk adjustment

H18.721 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.

Medicare coverage

H18.721 is named in 5 Medicare coverage policies — 5 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

A56537Billing and Coding: Scanning Computerized Ophthalmic Diagnostic Imaging (SCODI)
A56916Billing and Coding: Scanning Computerized Ophthalmic Diagnostic Imaging (SCODI)
A57068Billing and Coding: Ocular Photography - External
A57483Billing and Coding: Visual Fields

Code history

H18.721 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.

Related codes at this level

Codes that share H18.72. If H18.721 is not quite right, the correct code is usually one of these.

Questions about H18.721

Is H18.721 a billable ICD-10-CM code?: Yes. H18.721 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does H18.721 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).
What cannot be coded together with H18.721?: H18.721 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above H18.721 (H18.7) and apply to it just the same.