ICD-10 H18.503
Billable / SpecificUnspecified hereditary corneal dystrophies, bilateral
About ICD-10-CM H18.503
ICD-10-CM code H18.503 represents Unspecified hereditary corneal dystrophies, bilateral. This is a billable/specific code in the Eye and Adnexa chapter (block H18). The 2026 edition of ICD-10-CM H18.503 became effective on October 1, 2025.
Medicare LCD Coverage for H18.503
Local Coverage Determinations (LCDs) from CMS MACs that list H18.503 as a covered diagnosis.
Showing top 10 of 15 total . Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing H18.503.
5 Medicare
Codes Adjacent To H18.503
Other codes in section H15-H22 (Disorders of sclera, cornea, iris and ciliary body).
ICD-10 H18.503, Billing FAQ
Is ICD-10 code H18.503 billable? +
Yes, H18.503 is a billable ICD-10-CM code that can appear as a primary or secondary diagnosis on claims.
What CPT codes are commonly billed with H18.503? +
Procedures frequently paired with H18.503 include: 76514, 92499.
Get the full PayerReady toolkit
Free access to CPT/ICD-10 lookup, denial appeals, fee comparator, and claim auditing with credentialing enrollment.
Start free →Run this code through our claim audit tool
Check NCCI bundling, MUE limits, and modifier logic before submission.
Try the auditor →Did this page help?
Quick signal so we know what to improve.
If you want a code reference page that doesn't exist yet, email coding@payerready.com.
Tell us what's missing or wrong: coding@payerready.com. We respond within 5 business days.
Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on July 16, 2026.
Powered by 11K CPT · 98K ICD-10 · 860K MPFS rates · 4.5M NCCI edits · 9.5M NPIs. Our data methodology · About our coding team