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O11 Pre-existing hypertension with pre-eclampsia

BackO11.1Pre-existing hypertension with pre-eclampsia, first trimesterO11.2Pre-existing hypertension with pre-eclampsia, second trimesterO11.3Pre-existing hypertension with pre-eclampsia, third trimesterO11.4Pre-existing hypertension with pre-eclampsia, complicating childbirthO11.5Pre-existing hypertension with pre-eclampsia, complicating the puerperiumO11.9Pre-existing hypertension with pre-eclampsia, unspecified trimester
Category
O11
Pre-existing hypertension with pre-eclampsia
INCLUDES
conditions in O10 complicated by pre-eclampsia
pre-eclampsia superimposed pre-existing hypertension
CODING RULE
Use additional code: code from O10 to identify the type of hypertension
Chapter
XV · Pregnancy, childbirth and the puerperium
Section
O10-O16
Valid from
Source

CMS ICD-10-CM Tabular List, edition FY2026.

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