Question 1

What is ICD-10 code H53.049?

Accepted Answer

H53.049 is the ICD-10-CM diagnosis code for amblyopia suspect, unspecified eye. A condition where reduced vision development is suspected in one or both eyes, but the specific eye(s) affected are not documented. H53.049 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).

H53.049 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 laterality cannot be determined from medical record.

Question 2

Is H53.049 an HCC code?

Accepted Answer

No. H53.049 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 H53.049 billable?

Accepted Answer

Yes. H53.049 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. H53.049 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 H53.049?

Accepted Answer

H53.049 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 H53.049 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 H53.049?

Accepted Answer

Use this code only when laterality cannot be determined from medical record Query provider if possible to obtain specific eye involvement for more precise coding

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H53.049

Is H53.049 an HCC code?

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Open H53.049 in the Interactive Encoder

H53.049 ICD-10-CM Code: Amblyopia suspect, unspecified eye

HCC Buddy Code Card

H53.049

Is H53.049 an HCC code?

What This Code Means

Coding Tips

Child Codes

Code Hierarchy

Open H53.049 in the Interactive Encoder