Question 1

What is ICD-10 code H16.102?

Accepted Answer

H16.102 is the ICD-10-CM diagnosis code for unspecified superficial keratitis, left eye. Inflammation of the outer layer of the cornea in the left eye, without a specified underlying cause. H16.102 sits in the ICD-10-CM chapter for diseases of the eye and adnexa (h00-h59), within the section covering disorders of sclera, cornea, iris and ciliary body (h15-h22).

H16.102 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 is an unspecified code; if the cause is documented, use a more specific H16.1x code.

Question 2

Is H16.102 an HCC code?

Accepted Answer

No. H16.102 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 H16.102 billable?

Accepted Answer

Yes. H16.102 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. H16.102 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 H16.102?

Accepted Answer

H16.102 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 H16.102 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 H16.102?

Accepted Answer

This is an unspecified code; if the cause is documented, use a more specific H16.1x code Laterality is specified as left eye; verify documentation confirms left eye involvement

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H16.102

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H16.102 ICD-10-CM Code: Unspecified superficial keratitis, left eye

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H16.102

Is H16.102 an HCC code?

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