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O09.43

O09.43Supervision of pregnancy with grand multiparity, third trimester

Billable / specific codeICD-10-CMPOA exempt

O09.43 is a billable, specific ICD-10-CM code for supervision of pregnancy with grand multiparity, third trimester. It is valid for submission on a claim.

Risk adjustment

O09.43 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Medicare coverage

O09.43 is named in 2 Medicare coverage policies 2 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

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Related codes at this level

Codes that share O09.4. If O09.43 is not quite right, the correct code is usually one of these.

Questions about O09.43

Is O09.43 a billable ICD-10-CM code?
Yes. O09.43 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does O09.43 sit in the tabular list?
Pregnancy, childbirth and the puerperium (O00-O9A), in the block Supervision of high risk pregnancy (O09).
ICD-10-CMFY2026-Apr· effective April 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release — see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.