ICD-10-CM 2027 diagnosis code
O14.0Mild to moderate pre-eclampsia
O14.0 is a header code, so it can't be reported by itself. Choose one of the 5 more specific codes beneath it.
Looking up by condition? See ICD-10 code for Mild pre-eclampsia, ICD-10 code for Moderate pre-eclampsia.
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 O14.0
O14.0 is the ICD-10-CM diagnosis code for mild to moderate pre-eclampsia. It belongs to category O14 (pre-eclampsia), block O10-O16 (edema, proteinuria and hypertensive disorders in pregnancy, childbirth and the puerperium) and chapter 15 (pregnancy, childbirth and the puerperium). It is a header code, so it can't be reported by itself; one of its 5 subcodes must be used instead.
Within O14 (pre-eclampsia), O14.0 is specifically for mild to moderate pre-eclampsia. Related codes cover severe pre-eclampsia (O14.1), HELLP syndrome (O14.2) and unspecified pre-eclampsia (O14.9).
To report this condition, pick the subcode that matches the documentation: O14.00 (unspecified trimester), O14.02 (second trimester), O14.03 (third trimester), O14.04 (complicating childbirth) and O14.05 (complicating the puerperium).
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 O14.0
- O14.00Mild to moderate pre-eclampsia, unspecified trimesterBillable
- O14.02Mild to moderate pre-eclampsia, second trimesterBillable
- O14.03Mild to moderate pre-eclampsia, third trimesterBillable
- O14.04Mild to moderate pre-eclampsia, complicating childbirthBillable
- O14.05Mild to moderate pre-eclampsia, complicating the puerperiumBillable
Notes that apply from higher levels
Instructions written at a parent level also apply to O14.0.
› From O14 Pre-eclampsia
- pre-existing hypertension with pre-eclampsia (O11)
Broader instructions also apply from Chapter 15: Pregnancy, childbirth and the puerperium.
Alphabetic index entries
7 entriesTerms in the official ICD-10-CM index that lead to O14.0.
- Hypertension, hypertensive (accelerated) (benign) (essential) (idiopathic) (malignant) (systemic) › complicating › pregnancy › gestational (pregnancy induced) (without proteinuria) › with proteinuria › mild pre-eclampsia
- Hypertension, hypertensive (accelerated) (benign) (essential) (idiopathic) (malignant) (systemic) › complicating › pregnancy › gestational (pregnancy induced) (without proteinuria) › with proteinuria › moderate pre-eclampsia
- Pre-eclampsia › mild
- Pre-eclampsia › moderate
- Pregnancy (single) (uterine) › complicated by (care of) (management affected by) › edema › with › gestational hypertension, mild
- Pregnancy (single) (uterine) › complicated by (care of) (management affected by) › pre-eclampsia › mild
- Pregnancy (single) (uterine) › complicated by (care of) (management affected by) › pre-eclampsia › moderate
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 O14.0
Is O14.0 billable?
- No. O14.0 is a header code. Report one of its more specific subcodes instead.