H33.101 ICD-10-CM Code: Unspecified retinoschisis, right eye
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FY 2026 Apr update / Diseases of the eye and adnexa (H00-H59) / Disorders of choroid and retina (H30-H36)
H33.101
Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidanceUnspecified retinoschisis, right eye
A condition where the retina (the light-sensitive tissue at the back of the eye) splits into layers in the right eye, though the specific type or cause is not specified. This can affect vision and may require monitoring or treatment depending on severity.
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 H33.101 in this effective period.
Excludes 2
OfficialICD-10-CM does not list Excludes 2 notes for H33.101 in this effective period.
Related Child Codes
Includes
OfficialICD-10-CM does not list Includes notes for H33.101 in this effective period.
Excludes 1
OfficialICD-10-CM does not list Excludes 1 notes for H33.101 in this effective period.
Code First
OfficialICD-10-CM does not list Code First sequencing instructions for H33.101 in this effective period.
Use Additional
OfficialICD-10-CM does not list Use Additional Code instructions for H33.101 in this effective period.
Code Also
OfficialICD-10-CM does not list Code Also instructions for H33.101 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 H33.101 an HCC code?
No. H33.101 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
H33.101 is the ICD-10-CM diagnosis code for unspecified retinoschisis, right eye. A condition where the retina (the light-sensitive tissue at the back of the eye) splits into layers in the right eye, though the specific type or cause is not specified. This can affect vision and may require monitoring or treatment depending on severity. H33.101 sits in the ICD-10-CM chapter for diseases of the eye and adnexa (h00-h59), within the section covering disorders of choroid and retina (h30-h36).
H33.101 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.
Verify whether the retinoschisis is idiopathic or secondary to another condition, as this may affect code selection and documentation requirements.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for H33.101 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •Verify whether the retinoschisis is idiopathic or secondary to another condition, as this may affect code selection and documentation requirements
- •Confirm laterality is documented as right eye only; if bilateral or affecting the left eye, use separate codes (H33.102 for left eye, H33.103 for bilateral)