O26.5Maternal hypotension syndrome

O26.5 is the ICD-10-CM diagnosis code for maternal hypotension syndrome. It belongs to category O26 (maternal care for other conditions predominantly related to pregnancy), block O20-O29 (other maternal disorders predominantly related to pregnancy) and chapter 15 (pregnancy, childbirth and the puerperium). It is a header code, so it can't be reported by itself; one of its 4 subcodes must be used instead.

Within O26 (maternal care for other conditions predominantly related to pregnancy), O26.5 is specifically for maternal hypotension syndrome. Related codes cover excessive weight gain in pregnancy (O26.0), low weight gain in pregnancy (O26.1), pregnancy care for patient with recurrent pregnancy loss (O26.2), retained intrauterine contraceptive device in pregnancy (O26.3), herpes gestationis (O26.4), liver and biliary tract disorders in pregnancy, childbirth and the puerperium (O26.6), subluxation of symphysis (pubis) in pregnancy, childbirth and the puerperium (O26.7), other specified pregnancy related conditions (O26.8) and 1 more.

To report this condition, pick the subcode that matches the documentation: O26.50 (unspecified trimester), O26.51 (first trimester), O26.52 (second trimester) and O26.53 (third trimester).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.