ICD-10-CM 2027 diagnosis code

O48Late pregnancy

Not billable — use a more specific code

O48 is a header code, so it can't be reported by itself. Choose one of the 2 more specific codes beneath it.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About O48

O48 is the ICD-10-CM diagnosis code for late pregnancy. It belongs to block O30-O48 (maternal care related to the fetus and amniotic cavity and possible delivery problems) and chapter 15 (pregnancy, childbirth and the puerperium). It is a header code, so it can't be reported by itself; one of its 2 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: O48.0 (pregnancy) and O48.1 (pregnancy).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Specific codes under O48

Notes that apply from higher levels

Instructions written at a parent level also apply to O48.

Broader instructions also apply from Chapter 15: Pregnancy, childbirth and the puerperium.

Code history

2016
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2021
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2027

FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
No changes since FY2016.

Common questions about O48

Is O48 billable?: No. O48 is a header code. Report one of its more specific subcodes instead.