Edema, proteinuria and hypertensive disorders in pregnancy, childbirth and the puerperium (O10-O16) ICD-10-CM
The O10–O16 section covers edema, proteinuria and hypertensive disorders in pregnancy, childbirth and the puerperium with 125 ICD-10-CM diagnosis codes, of which 98 are billable in fiscal year 2026. The section is organized into the 7 code ranges listed below.
Code Ranges in This Section 7 ranges · 125 codes
The info icon previews the code ranges inside each row and its instructional notations from the official Tabular List.
About the O10–O16 Code Range
ICD-10 codes O10 to O16 cover a range of hypertensive disorders, edema, and proteinuria occurring during pregnancy, childbirth, and the puerperium. These codes are specifically used to document complications from pre-existing hypertension, gestational hypertension, pre-eclampsia, eclampsia, and related conditions affecting maternal and fetal health.
This chapter includes detailed coding for conditions such as pre-existing essential hypertension (O10.0), often referred to as benign or malignant hypertension complicating pregnancy, childbirth, or the postpartum period. It also covers hypertensive heart disease (O10.1), chronic kidney disease linked to hypertension (O10.2), and combinations of these complications during different pregnancy stages. Codes for pre-eclampsia (O14), including mild, severe, and HELLP syndrome, identify hypertension with proteinuria and liver or platelet abnormalities during pregnancy. Gestational edema and proteinuria without hypertension (O12 codes), along with gestational hypertension without proteinuria (O13 codes), reflect pregnancy-induced disorders distinguished by presence or absence of significant protein in the urine. The range also includes unspecified maternal hypertension (O16), aiding documentation when specific causes or timing are unclear. Using synonyms like "pregnancy-induced hypertension," "eclampsia," and "gestational proteinuria" helps coders correctly assign these precise codes to maternal hypertensive complications in obstetrics.
Questions About This Page
How many codes are in the O10-O16 range?
The O10-O16 range contains 125 ICD-10-CM diagnosis codes in FY 2026. 98 of them are billable, and the rest are category headers that organize the section.
What conditions does O10-O16 cover?
The range covers edema, proteinuria and hypertensive disorders in pregnancy, childbirth and the puerperium. 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 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
