Question 1

What is ICD-10 code O45.002?

Accepted Answer

O45.002 is the ICD-10-CM diagnosis code for premature separation of placenta with coagulation defect, unspecified, second trimester. The placenta separates prematurely from the uterine wall with blood clotting problems during the second three months of pregnancy. O45.002 sits in the ICD-10-CM chapter for pregnancy, childbirth and the puerperium (o00-o9a), within the section covering maternal care related to the fetus and amniotic cavity and possible delivery problems (o30-o48).

O45.002 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.

Confirm second trimester dating before assigning this code.

Question 2

Is O45.002 an HCC code?

Accepted Answer

No. O45.002 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 O45.002 billable?

Accepted Answer

Yes. O45.002 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. O45.002 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 O45.002?

Accepted Answer

O45.002 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 O45.002 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 O45.002?

Accepted Answer

Confirm second trimester dating before assigning this code Abruption with coagulation defect is a serious condition requiring immediate intervention

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O45.002

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O45.002 ICD-10-CM Code: Premature separation of placenta with coagulation defect, unspecified, second trimester

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O45.002

Is O45.002 an HCC code?

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What This Code Means

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Child Codes

Code Hierarchy

Work O45.002 in HCC Buddy