Pre-eclampsia (O14) ICD-10-CM
The O14 code range covers pre-eclampsia with 25 ICD-10-CM diagnosis codes. 20 of them are billable and valid for claim submission in fiscal year 2026, and the category headers group them but cannot themselves be billed.
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
- pre-existing hypertension with pre-eclampsia O11
Codes in the O14 Range 25 codes · 20 billable
- O14 Pre-eclampsiaNon-billable
- O14.0 Mild to moderate pre-eclampsiaNon-billable
- O14.00 Mild to moderate pre-eclampsia, unspecified trimester
- O14.02 Mild to moderate pre-eclampsia, second trimester
- O14.03 Mild to moderate pre-eclampsia, third trimester
- O14.04 Mild to moderate pre-eclampsia, complicating childbirth
- O14.05 Mild to moderate pre-eclampsia, complicating the puerperium
- O14.1 Severe pre-eclampsiaNon-billable
- O14.10 Severe pre-eclampsia, unspecified trimester
- O14.12 Severe pre-eclampsia, second trimester
- O14.13 Severe pre-eclampsia, third trimester
- O14.14 Severe pre-eclampsia complicating childbirth
- O14.15 Severe pre-eclampsia, complicating the puerperium
- O14.2 HELLP syndromeNon-billable
- O14.20 HELLP syndrome (HELLP), unspecified trimester
- O14.22 HELLP syndrome (HELLP), second trimester
- O14.23 HELLP syndrome (HELLP), third trimester
- O14.24 HELLP syndrome, complicating childbirth
- O14.25 HELLP syndrome, complicating the puerperium
- O14.9 Unspecified pre-eclampsiaNon-billable
- O14.90 Unspecified pre-eclampsia, unspecified trimester
- O14.92 Unspecified pre-eclampsia, second trimester
- O14.93 Unspecified pre-eclampsia, third trimester
- O14.94 Unspecified pre-eclampsia, complicating childbirth
- O14.95 Unspecified pre-eclampsia, complicating the puerperium
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the O14 range.
HELLP Syndrome
A syndrome of HEMOLYSIS, elevated liver ENZYMES, and low blood platelets count (THROMBOCYTOPENIA). HELLP syndrome is observed in PREGNANT PEOPLE with PRE-ECLAMPSIA or ECLAMPSIA who also exhibit LIVER damage and abnormalities in BLOOD COAGULATION.
About the O14 Code Range
ICD-10 code section O14 is used specifically to classify different forms and stages of pre-eclampsia, a pregnancy complication characterized by high blood pressure and potential organ damage. It distinguishes between mild to moderate, severe, and a related condition known as HELLP syndrome, supporting precise documentation of the condition’s severity and timing during pregnancy.
This coding set includes detailed options such as O14.0 for mild to moderate pre-eclampsia and O14.1 for severe pre-eclampsia, with further subdivisions to denote the trimester affected or complications arising during childbirth or the puerperium. For example, O14.00 covers mild pre-eclampsia without a specified trimester and is linked to terms like “Moderate proteinuric hypertension of pregnancy.” The codes also capture the presence of HELLP syndrome—a severe variant of pre-eclampsia—under O14.2 and its detailed subcodes. Additionally, unspecified pre-eclampsia and its variations, including postpartum forms, are included under O14.9. This nuance helps medical coders accurately assign the ICD-10 code for pre-eclampsia based on clinical presentation and timing, ensuring clear communication and appropriate care documentation.
Questions About This Page
How many billable codes are in the O14 range?
Of the 25 codes in this range, 20 are billable and valid for claim submission from October 1, 2025 through September 30, 2026. Category header codes group them but cannot be reported on claims.
What does the O14 range classify?
The range classifies pre-eclampsia. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
