O60.00 — Preterm labor without delivery, unspecified trimester

O60.00

ICD-10 Chapter 15: Pregnancy, Childbirth & Puerperium — illustrative image — Chapter 15: Pregnancy, childbirth and the puerperium (O00–O9A) — illustrative image

What this code means

Threatened preterm labour means signs suggesting labour may start before 37 weeks, recorded without delivery following at that stage.

Also called: threatened preterm labor, threatened premature labor.

When this code is used

Used for threatened preterm labour.

Where it sits in ICD-10-CM

Code O60.00 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

Condition guide: Pregnancy

Frequently asked questions

What is ICD-10-CM code O60.00?

O60.00 is the ICD-10-CM diagnosis code for “Preterm labor without delivery, unspecified trimester”. Threatened preterm labour means signs suggesting labour may start before 37 weeks, recorded without delivery following at that stage.

When is code O60.00 used?

Used for threatened preterm labour. 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.