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H18.593

H18.593: Other hereditary corneal dystrophies, bilateral

Billable / specific codeICD-10-CMbilateral

H18.593 is a billable, specific ICD-10-CM code for other hereditary corneal dystrophies, bilateral. It is valid for submission on a claim.

Check H18.593 with the rest of the claim: free scrubber

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Medicare coverage

H18.593 is named in 8 Medicare coverage policies: 8 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

  • A56457Billing and Coding: Corneal Pachymetry
  • A56537Billing and Coding: Scanning Computerized Ophthalmic Diagnostic Imaging (SCODI)
  • A56548Billing and Coding: Corneal Pachymetry
  • A56611Billing and Coding: Corneal Pachymetry

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under H18.59

ICD-10-CMFY2027· effective October 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.