O26.51 Maternal hypotension syndrome, first trimester

Instructional Notes:

O26.51
Description: Maternal hypotension syndrome, first trimester
↓
O26.5
Description: Maternal hypotension syndrome
Inclusion Term:
- Supine hypotensive syndrome
↓
O26
Description: Maternal care for other conditions predominantly related to pregnancy
↓
O20-O29
Description: Other maternal disorders predominantly related to pregnancy (O20-O29)
Exclude2:
- maternal care related to the fetus and amniotic cavity and possible delivery problems (O30-O48)
- maternal diseases classifiable elsewhere but complicating pregnancy, labor and delivery, and the puerperium (O98-O99)
↓
O00-O9A
Description: Pregnancy, childbirth and the puerperium
Exclude1:
- supervision of normal pregnancy (Z34.-)
Exclude2:
- mental and behavioral disorders associated with the puerperium (F53.-)
- obstetrical tetanus (A34)
- postpartum necrosis of pituitary gland (E23.0)
- puerperal osteomalacia (M83.0)
Notes:
- CODES FROM THIS CHAPTER ARE FOR USE ONLY ON MATERNAL RECORDS, NEVER ON NEWBORN RECORDS
- Codes from this chapter are for use for conditions related to or aggravated by the pregnancy, childbirth, or by the puerperium (maternal causes or obstetric causes)
- Trimesters are counted from the first day of the last menstrual period. They are defined as follows:
- 1st trimester- less than 14 weeks 0 days
- 2nd trimester- 14 weeks 0 days to less than 28 weeks 0 days
- 3rd trimester- 28 weeks 0 days until delivery
Use Additional Code:
- code, if applicable, from category Z3A, Weeks of gestation, to identify the specific week of the pregnancy, if known.