Other maternal disorders predominantly related to pregnancy (O20-O29) ICD-10-CM
The O20–O29 section covers other maternal disorders predominantly related to pregnancy with 343 ICD-10-CM diagnosis codes, of which 260 are billable in fiscal year 2027. The section is organized into the 9 code ranges listed below.
Type 2 Excludes
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
Code Ranges in This Section 9 ranges · 343 codes
The info icon previews the code ranges inside each row and its instructional notations from the official Tabular List.
About the O20–O29 Code Range
These conditions include bleeding, vomiting, infections, and other problems linked mainly to pregnancy. The categories also include conditions during childbirth or the period after it, abnormal prenatal screening findings, and complications of anesthesia during pregnancy.
O20 separates early-pregnancy bleeding into threatened abortion, other bleeding, and unspecified bleeding. O21 distinguishes mild, late, and other pregnancy-related vomiting, including vomiting with metabolic disturbance. O22 separates vein problems and hemorrhoids by condition or location. O23 groups infections by the affected part of the urinary or genital tract.
O24 distinguishes diabetes present before pregnancy from gestational diabetes and separates pre-existing diabetes by type. O25 separates malnutrition by whether it occurs during pregnancy, childbirth, or afterward. O26 groups other pregnancy-related conditions, including weight gain concerns, recurrent pregnancy loss, and liver or biliary tract disorders. O28 separates abnormal prenatal screening findings by the kind of finding. O29 distinguishes anesthesia complications by the affected body system or specific problem.
Questions About This Page
How many codes are in the O20-O29 range?
The O20-O29 range contains 343 ICD-10-CM diagnosis codes in FY 2027. 260 of them are billable, and the rest are category headers that organize the section.
What conditions does O20-O29 cover?
The range covers other maternal disorders predominantly related to pregnancy. The code ranges listed above break it into groups of related conditions, and each one links to its own page with the full code list.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
