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O09.891 ICD-10-CM Code: Supervision of other high risk pregnancies, first trimester

ICD-10-CM Code View

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FY 2026 Apr update / Pregnancy, childbirth and the puerperium (O00-O9A) / Supervision of high risk pregnancy (O09)

O09.891

Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidance

Supervision of other high risk pregnancies, first trimester

Medical supervision of other high-risk pregnancies not specifically classified elsewhere during the first trimester.

CMS-HCC V28

N/A

Not mapped

CMS-HCC V24

N/A

Not mapped

ACA/HHS

HCC 212

Varies by metal level

ESRD/PACE

N/A

Not mapped

RXHCC

N/A

Not mapped

Code Book Path

Official
O09.8Supervision of other high risk pregnancies
O09.89Supervision of other high risk pregnancies
O09.891Supervision of other high risk pregnancies, first trimester

Inclusion Terms

Official

ICD-10-CM does not list inclusion terms for O09.891 in this effective period.

Excludes 2

Official

ICD-10-CM does not list Excludes 2 notes for O09.891 in this effective period.

Related Child Codes

Official
O09.892Supervision of other high risk pregnancies, second trimester
O09.893Supervision of other high risk pregnancies, third trimester
O09.899Supervision of other high risk pregnancies, unspecified trimester

Includes

Official

ICD-10-CM does not list Includes notes for O09.891 in this effective period.

Excludes 1

Official

ICD-10-CM does not list Excludes 1 notes for O09.891 in this effective period.

Code First

Official

ICD-10-CM does not list Code First sequencing instructions for O09.891 in this effective period.

Use Additional

Official

ICD-10-CM does not list Use Additional Code instructions for O09.891 in this effective period.

Code Also

Official

ICD-10-CM does not list Code Also instructions for O09.891 in this effective period.

Buddy Documentation Tip

HCC Buddy guidance
Use this code for high-risk pregnancies that don't fit other specific O09 categories; document the specific risk factors clearly.
Pair with additional codes that specify the actual risk factors (maternal age, medical conditions, etc.).

Last updated: FY2026 ICD-10-CM Apr update, Apr 1, 2026 through Sep 30, 2026. CMS-HCC V28 is 100% phased in for payment year 2026.

Is O09.891 an HCC code?

No. O09.891 is a billable ICD-10-CM code but does not map to any HCC category in V28, V24, ESRD, or RxHCC.

Code
O09.891
Description
Supervision of other high risk pregnancies, first trimester
HCC (V28)
No CMS-HCC V28 mapping
RAF
Billable
Yes
Payment year
2026

Coder workflow notes

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This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).

What This Code Means

O09.891 is the ICD-10-CM diagnosis code for supervision of other high risk pregnancies, first trimester. Medical supervision of other high-risk pregnancies not specifically classified elsewhere during the first trimester. O09.891 sits in the ICD-10-CM chapter for pregnancy, childbirth and the puerperium (o00-o9a), within the section covering supervision of high risk pregnancy (o09).

O09.891 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 for high-risk pregnancies that don't fit other specific O09 categories; document the specific risk factors clearly.

HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for O09.891 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.

Coding Tips

  • Use this code for high-risk pregnancies that don't fit other specific O09 categories; document the specific risk factors clearly.
  • Pair with additional codes that specify the actual risk factors (maternal age, medical conditions, etc.).

Child Codes

Code Hierarchy

Work O09.891 in HCC Buddy

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