ICD-10-CM 2027 diagnosis code
O25.1Malnutrition in pregnancy
O25.1 is a header code, so it can't be reported by itself. Choose one of the 4 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 O25.1
O25.1 is the ICD-10-CM diagnosis code for malnutrition in pregnancy. It belongs to category O25 (malnutrition in pregnancy, childbirth and the puerperium), block O20-O29 (other maternal disorders predominantly related to pregnancy) and chapter 15 (pregnancy, childbirth and the puerperium). It is a header code, so it can't be reported by itself; one of its 4 subcodes must be used instead.
Within O25 (malnutrition in pregnancy, childbirth and the puerperium), O25.1 is specifically for malnutrition in pregnancy. Related codes cover childbirth (O25.2) and the puerperium (O25.3).
To report this condition, pick the subcode that matches the documentation: O25.10 (unspecified trimester), O25.11 (first trimester), O25.12 (second trimester) and O25.13 (third trimester).
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 O25.1
Notes that apply from higher levels
Instructions written at a parent level also apply to O25.1.
Broader instructions also apply from O20-O29 Other maternal disorders predominantly related to pregnancy and Chapter 15: Pregnancy, childbirth and the puerperium.
Alphabetic index entries
1 entriesTerms in the official ICD-10-CM index that lead to O25.1.
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- No changes since FY2016.
Common questions about O25.1
Is O25.1 billable?
- No. O25.1 is a header code. Report one of its more specific subcodes instead.