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H18.223

H18.223Idiopathic corneal edema, bilateral

Billable / specific codeICD-10-CMbilateral

H18.223 is a billable, specific ICD-10-CM code for idiopathic corneal edema, bilateral. It is valid for submission on a claim.

Risk adjustment

H18.223 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

H18.223 is named in 9 Medicare coverage policies 9 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)
  • A56548Billing and Coding: Corneal Pachymetry
  • A56825Billing and Coding: Scanning Computerized Ophthalmic Diagnostic Imaging (SCODI)
  • A56916Billing and Coding: Scanning Computerized Ophthalmic Diagnostic Imaging (SCODI)

Related codes at this level

Codes that share H18.22. If H18.223 is not quite right, the correct code is usually one of these.

Questions about H18.223

Is H18.223 a billable ICD-10-CM code?
Yes. H18.223 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does H18.223 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).
ICD-10-CMFY2026-Apr· effective April 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release — see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.