Question 1

What is ICD-10 code H52.533?

Accepted Answer

H52.533 is the ICD-10-CM diagnosis code for spasm of accommodation, bilateral. A condition where the eye muscles that control focus involuntarily contract in both eyes, making it difficult to see clearly at different distances. H52.533 sits in the ICD-10-CM chapter for diseases of the eye and adnexa (h00-h59), within the section covering disorders of ocular muscles, binocular movement, accommodation and refraction (h49-h52).

H52.533 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 bilateral involvement; if only one eye is affected, use H52.531 or H52.532 instead.

Question 2

Is H52.533 an HCC code?

Accepted Answer

No. H52.533 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 H52.533 billable?

Accepted Answer

Yes. H52.533 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. H52.533 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 H52.533?

Accepted Answer

H52.533 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 H52.533 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 H52.533?

Accepted Answer

Verify documentation specifies bilateral involvement; if only one eye is affected, use H52.531 or H52.532 instead This condition is often associated with eye strain or certain medications; review clinical notes for underlying cause

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H52.533

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H52.533 ICD-10-CM Code: Spasm of accommodation, bilateral

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H52.533

Is H52.533 an HCC code?

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