H26.40 ICD-10-CM Code: Unspecified secondary cataract
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)
H26.40
Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidanceUnspecified secondary cataract
A clouding of the lens that developed after eye surgery or injury, but the specific type is not documented.
CMS-HCC V28
N/A—
Not mapped
CMS-HCC V24
N/A—
Not mapped
ACA/HHS
N/A—
Not mapped
ESRD/PACE
N/A—
Not mapped
RXHCC
N/A—
Not mapped
Code Book Path
Inclusion Terms
OfficialICD-10-CM does not list inclusion terms for H26.40 in this effective period.
Excludes 2
OfficialICD-10-CM does not list Excludes 2 notes for H26.40 in this effective period.
Related Child Codes
Includes
OfficialICD-10-CM does not list Includes notes for H26.40 in this effective period.
Excludes 1
OfficialICD-10-CM does not list Excludes 1 notes for H26.40 in this effective period.
Code First
OfficialICD-10-CM does not list Code First sequencing instructions for H26.40 in this effective period.
Use Additional
OfficialICD-10-CM does not list Use Additional Code instructions for H26.40 in this effective period.
Code Also
OfficialICD-10-CM does not list Code Also instructions for H26.40 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 H26.40 an HCC code?
No. H26.40 is a billable ICD-10-CM code but does not map to any HCC category in V28, V24, ESRD, or RxHCC.
Coder workflow notes
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This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).
What This Code Means
H26.40 is the ICD-10-CM diagnosis code for unspecified secondary cataract. A clouding of the lens that developed after eye surgery or injury, but the specific type is not documented. H26.40 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).
H26.40 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.
This is an unspecified code; attempt to obtain more specific documentation about the type of secondary cataract if possible.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for H26.40 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •This is an unspecified code; attempt to obtain more specific documentation about the type of secondary cataract if possible
- •Use only when the specific secondary cataract type cannot be determined from the medical record