H40.032 ICD-10-CM Code: Anatomical narrow angle, left eye
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FY 2026 Apr update / Diseases of the eye and adnexa (H00-H59) / Glaucoma (H40-H42)
H40.032
Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidanceAnatomical narrow angle, left eye
This condition describes a structural problem in the left eye where the angle between the iris and cornea is abnormally narrow, which can restrict fluid drainage and potentially lead to increased eye pressure. This anatomical variation is a risk factor for angle-closure glaucoma.
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
Official- Primary angle closure suspect
Excludes 2
OfficialICD-10-CM does not list Excludes 2 notes for H40.032 in this effective period.
Related Child Codes
Includes
OfficialICD-10-CM does not list Includes notes for H40.032 in this effective period.
Excludes 1
OfficialICD-10-CM does not list Excludes 1 notes for H40.032 in this effective period.
Code First
OfficialICD-10-CM does not list Code First sequencing instructions for H40.032 in this effective period.
Use Additional
OfficialICD-10-CM does not list Use Additional Code instructions for H40.032 in this effective period.
Code Also
OfficialICD-10-CM does not list Code Also instructions for H40.032 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 H40.032 an HCC code?
No. H40.032 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
H40.032 is the ICD-10-CM diagnosis code for anatomical narrow angle, left eye. This condition describes a structural problem in the left eye where the angle between the iris and cornea is abnormally narrow, which can restrict fluid drainage and potentially lead to increased eye pressure. This anatomical variation is a risk factor for angle-closure glaucoma. H40.032 sits in the ICD-10-CM chapter for diseases of the eye and adnexa (h00-h59), within the section covering glaucoma (h40-h42).
H40.032 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 code is used for anatomical findings without acute symptoms; if the patient develops acute angle-closure glaucoma, use a different code from the H40.0 category that specifies the acute presentation.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for H40.032 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •This code is used for anatomical findings without acute symptoms; if the patient develops acute angle-closure glaucoma, use a different code from the H40.0 category that specifies the acute presentation
- •Verify laterality is documented as left eye only; if both eyes are affected, you will need a separate code for the right eye (H40.031)