O09.90 — Supervision of high risk pregnancy, unspecified, unspecified trimester
O09.90

What this code means
Supervision of a high-risk pregnancy, recorded without the trimester or the specific risk being stated.
Also called: supervision of high risk pregnancy.
When this code is used
Used for supervision of high risk pregnancy, unspecified, unspecified trimester.
Where it sits in ICD-10-CM
Code O09.90 belongs to Chapter 15: Pregnancy, childbirth and the puerperium, which covers codes O00–O9A in the FY2027 ICD-10-CM tabular list. The official description above is copied verbatim from the CDC/NCHS FY2027 code file.
Learn more about this condition
Frequently asked questions
What is ICD-10-CM code O09.90?
O09.90 is the ICD-10-CM diagnosis code for “Supervision of high risk pregnancy, unspecified, unspecified trimester”. Supervision of a high-risk pregnancy, recorded without the trimester or the specific risk being stated.
When is code O09.90 used?
Used for supervision of high risk pregnancy, unspecified, unspecified trimester. It belongs to Chapter 15 of ICD-10-CM (Pregnancy, childbirth and the puerperium).
This guide explains ICD-10-CM codes in plain language for patients, students and other readers. It is educational information only — not coding, billing or medical advice. The code recorded for any real encounter is assigned from the full clinical documentation by the treating team and qualified coders, and only they can decide which code fits a specific case.
More codes in Chapter 15
O03.9 — Complete or unspecified spontaneous abortion without complication
O10.919 — Unspecified pre-existing hypertension complicating pregnancy, unspecified trimester
O13.9 — Gestational [pregnancy-induced] hypertension without significant proteinuria, unspecified trimester
O14.90 — Unspecified pre-eclampsia, unspecified trimester
O20.0 — Threatened abortion
O21.0 — Mild hyperemesis gravidarum