H18.003 ICD-10-CM Code: Unspecified corneal deposit, bilateral
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FY 2026 Apr update / Diseases of the eye and adnexa (H00-H59) / Disorders of sclera, cornea, iris and ciliary body (H15-H22)
H18.003
Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidanceUnspecified corneal deposit, bilateral
A condition where unknown substances or abnormal material have accumulated on both corneas (the clear front part of the eye), but the specific type of deposit has not been identified. This can affect vision and may require further investigation to determine the cause.
CMS-HCC V28
00
RAF 0
CMS-HCC V24
00
RAF 0
ACA/HHS
00
RAF 0
ESRD/PACE
00
RAF 0
RXHCC
00
RAF 0
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Inclusion Terms
OfficialICD-10-CM does not list inclusion terms for H18.003 in this effective period.
Excludes 2
OfficialICD-10-CM does not list Excludes 2 notes for H18.003 in this effective period.
Related Child Codes
Includes
OfficialICD-10-CM does not list Includes notes for H18.003 in this effective period.
Excludes 1
OfficialICD-10-CM does not list Excludes 1 notes for H18.003 in this effective period.
Code First
OfficialICD-10-CM does not list Code First sequencing instructions for H18.003 in this effective period.
Use Additional
OfficialICD-10-CM does not list Use Additional Code instructions for H18.003 in this effective period.
Code Also
OfficialICD-10-CM does not list Code Also instructions for H18.003 in this effective period.
Buddy Documentation Tip
Last updated: FY2026 ICD-10-CM Apr update, Apr 1, 2026 through Sep 30, 2026. CMS-HCC V28 is 100% phased in for payment year 2026.
Is H18.003 an HCC code?
No. H18.003 is a billable ICD-10-CM code but does not map to any HCC category in V28, V24, ESRD, or RxHCC.
This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).
What This Code Means
H18.003 is the ICD-10-CM diagnosis code for unspecified corneal deposit, bilateral. A condition where unknown substances or abnormal material have accumulated on both corneas (the clear front part of the eye), but the specific type of deposit has not been identified. This can affect vision and may require further investigation to determine the cause. H18.003 sits in the ICD-10-CM chapter for diseases of the eye and adnexa (h00-h59), within the section covering disorders of sclera, cornea, iris and ciliary body (h15-h22).
H18.003 is a billable ICD-10-CM code but does not map to a payment HCC under the CMS-HCC V28, V24, ESRD, or RxHCC risk adjustment models. It can be reported on Medicare Advantage encounter data submissions but it does not contribute to a beneficiary's RAF score and therefore does not affect risk-adjusted payments to the plan.
Use this code only when the type of corneal deposit is unspecified or unknown; if the deposit type is identified (such as crystalline, lipid, or pigmented), use a more specific H18.0 code instead.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for H18.003 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •Use this code only when the type of corneal deposit is unspecified or unknown; if the deposit type is identified (such as crystalline, lipid, or pigmented), use a more specific H18.0 code instead
- •The '3' at the end indicates bilateral involvement (both eyes); ensure documentation clearly states both eyes are affected before assigning this code