Question 1

What is ICD-10 code D48.118?

Accepted Answer

D48.118 is the ICD-10-CM diagnosis code for desmoid tumor of other site. A desmoid tumor in a location not specified by the other desmoid tumor codes, such as unusual or multiple sites. D48.118 sits in the ICD-10-CM chapter for neoplasms (c00-d49), within the section covering neoplasms of uncertain behavior, polycythemia vera and myelodysplastic syndromes (d37-d48).

D48.118 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 the desmoid tumor location does not fit into the more specific categories.

Question 2

Is D48.118 an HCC code?

Accepted Answer

No. D48.118 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 D48.118 billable?

Accepted Answer

Yes. D48.118 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. D48.118 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 D48.118?

Accepted Answer

D48.118 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 D48.118 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 D48.118?

Accepted Answer

Use this code only when the desmoid tumor location does not fit into the more specific categories Provide detailed documentation of the exact anatomical location in the medical record

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D48.118

Is D48.118 an HCC code?

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D48.118 ICD-10-CM Code: Desmoid tumor of other site

HCC Buddy Code Card

D48.118

Is D48.118 an HCC code?

What This Code Means

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Child Codes

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Work D48.118 in HCC Buddy