Question 1

What is ICD-10 code D72.89?

Accepted Answer

D72.89 is the ICD-10-CM diagnosis code for other specified disorders of white blood cells. Various other disorders affecting white blood cells that don't fit into the more specific categories. This includes unusual conditions or combinations of white blood cell abnormalities. D72.89 sits in the ICD-10-CM chapter for diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism (d50-d89), within the section covering other disorders of blood and blood-forming organs (d70-d77).

D72.89 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 a catch-all code; ensure no more specific code exists for the documented condition.

Question 2

Is D72.89 an HCC code?

Accepted Answer

No. D72.89 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 D72.89 billable?

Accepted Answer

Yes. D72.89 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. D72.89 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 D72.89?

Accepted Answer

D72.89 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 community model rewards D72.89 with a risk adjustment factor, it contributes zero to a Medicare Advantage beneficiary's V28/V24 community RAF score in either version. Coders should check whether provider documentation supports a more specific child code that does map to a community payment HCC.

Question 5

What should coders know when reporting D72.89?

Accepted Answer

This is a catch-all code; ensure no more specific code exists for the documented condition Clearly document the specific white blood cell disorder in the medical record to support this code selection

HCC Buddy Code Card

D72.89

Is D72.89 an HCC code?

Get the V28 RAF + MEAT cheat sheet

What This Code Means

Coding Tips

Child Codes

Code Hierarchy

Work D72.89 in HCC Buddy

D72.89 ICD-10-CM Code: Other specified disorders of white blood cells

HCC Buddy Code Card

D72.89

Is D72.89 an HCC code?

Get the V28 RAF + MEAT cheat sheet

What This Code Means

Coding Tips

Child Codes

Code Hierarchy

Work D72.89 in HCC Buddy