Is O26.843 a billable ICD-10-CM code?

Yes. O26.843 is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does O26.843 sit in the tabular list?

Pregnancy, childbirth and the puerperium (O00-O9A), in the block Other maternal disorders predominantly related to pregnancy (O20-O29).

What cannot be coded together with O26.843?

O26.843 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above O26.843 (O26.84) and apply to it just the same.

O26.843

O26.843 — Uterine size-date discrepancy, third trimester

Billable / specific codeICD-10-CM

O26.843 is a billable, specific ICD-10-CM code for uterine size-date discrepancy, third trimester. It is valid for submission on a claim.

Excludes1 inherited from the categories above O26.843

These are not written on O26.843, but they bind it: a note on a category applies to every code beneath it. Billing O26.843 with anything listed here is a denial.

Written on O26.84 — Uterine size-date discrepancy complicating pregnancy

encounter for suspected problem with fetal growth ruled out (Z03.74)

Other codes that can never be billed with O26.843

These codes carry an Excludes1 note pointing at O26.843. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading O26.843 alone.

Z03.7Encounter for suspected maternal and fetal conditions ruled out

Risk adjustment

O26.843 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.

Code history

O26.843 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.

Related codes at this level

Codes that share O26.84. If O26.843 is not quite right, the correct code is usually one of these.

Questions about O26.843

Is O26.843 a billable ICD-10-CM code?: Yes. O26.843 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does O26.843 sit in the tabular list?: Pregnancy, childbirth and the puerperium (O00-O9A), in the block Other maternal disorders predominantly related to pregnancy (O20-O29).
What cannot be coded together with O26.843?: O26.843 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above O26.843 (O26.84) and apply to it just the same.