H27.9 ICD-10-CM Code: Unspecified disorder of lens
HCC Buddy Code Card
Digital ICD-10 code-book layout with official code detail, always-visible risk models, Code Trumping, and Buddy coding guidance.
FY 2026 Apr update / Diseases of the eye and adnexa (H00-H59) / Disorders of lens (H25-H28)
H27.9
Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidanceUnspecified disorder of lens
This code is used when a patient has a problem with the lens of the eye, but the specific type of lens disorder has not been identified or documented. The lens is the clear part of the eye that helps focus light onto the retina.
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
Code Trumping
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Code Book Path
Inclusion Terms
OfficialICD-10-CM does not list inclusion terms for H27.9 in this effective period.
Excludes 2
OfficialICD-10-CM does not list Excludes 2 notes for H27.9 in this effective period.
Related Child Codes
Includes
OfficialICD-10-CM does not list Includes notes for H27.9 in this effective period.
Excludes 1
Official- congenital lens malformations (Q12.-)
- mechanical complications of intraocular lens implant (T85.2)
- pseudophakia (Z96.1)
Code First
OfficialICD-10-CM does not list Code First sequencing instructions for H27.9 in this effective period.
Use Additional
OfficialICD-10-CM does not list Use Additional Code instructions for H27.9 in this effective period.
Code Also
OfficialICD-10-CM does not list Code Also instructions for H27.9 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 H27.9 an HCC code?
No. H27.9 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
H27.9 is the ICD-10-CM diagnosis code for unspecified disorder of lens. This code is used when a patient has a problem with the lens of the eye, but the specific type of lens disorder has not been identified or documented. The lens is the clear part of the eye that helps focus light onto the retina. H27.9 sits in the ICD-10-CM chapter for diseases of the eye and adnexa (h00-h59), within the section covering disorders of lens (h25-h28).
H27.9 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 documentation does not specify the exact lens disorder; if the specific condition is known (such as cataract, presbyopia, or lens dislocation), use the more specific code instead.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for H27.9 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 documentation does not specify the exact lens disorder; if the specific condition is known (such as cataract, presbyopia, or lens dislocation), use the more specific code instead
- •Query the provider if possible to obtain more specific diagnosis information, as this unspecified code may result in lower reimbursement and limits clinical clarity