Question 1

What is ICD-10 code H53.132?

Accepted Answer

H53.132 is the ICD-10-CM diagnosis code for sudden visual loss, left eye. A sudden loss of vision in the left eye that occurs without warning, which may indicate a serious eye condition requiring immediate evaluation. H53.132 sits in the ICD-10-CM chapter for diseases of the eye and adnexa (h00-h59), within the section covering visual disturbances and blindness (h53-h54).

H53.132 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 documentation specifies the left eye and that vision loss was sudden in onset.

Question 2

Is H53.132 an HCC code?

Accepted Answer

No. H53.132 is a billable ICD-10-CM code but does not map to any payment HCC category under the CMS-HCC V28, V24, ESRD, or RxHCC risk adjustment models. It can still be reported on Medicare Advantage encounter data submissions, but it does not contribute to the beneficiary's Risk Adjustment Factor (RAF) score and therefore does not affect the risk-adjusted capitation payment to the plan. V28 reached 100% phase-in for payment year 2026.

Question 3

Is H53.132 billable?

Accepted Answer

Yes. H53.132 is a billable ICD-10-CM code that can be reported on professional and institutional claims as a primary or secondary diagnosis when the provider documentation supports the specific condition described. Billable codes in ICD-10-CM are coded to the highest level of specificity available for the documented diagnosis. H53.132 is current for fiscal year 2026 and remains in the active CMS ICD-10-CM code set published by the National Center for Health Statistics.

Question 4

What is the V28 vs V24 difference for H53.132?

Accepted Answer

H53.132 does not map to a payment HCC under either the CMS-HCC V28 risk adjustment model or the older V24 model. V28 reached 100% phase-in for payment year 2026, replacing V24 which was used during the PY2024–PY2025 transition. Because neither model rewards H53.132 with a risk adjustment factor, it contributes zero to a Medicare Advantage beneficiary's RAF score in either version. Coders should check whether provider documentation supports a more specific child code that does map to a payment HCC.

Question 5

What should coders know when reporting H53.132?

Accepted Answer

Verify documentation specifies the left eye and that vision loss was sudden in onset Investigate the underlying cause (retinal artery occlusion, optic neuritis, etc.) as this code describes the symptom, not the diagnosis

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H53.132

Is H53.132 an HCC code?

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H53.132 ICD-10-CM Code: Sudden visual loss, left eye

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H53.132

Is H53.132 an HCC code?

What This Code Means

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Child Codes

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Open H53.132 in the Interactive Encoder