Inclusion term:
Twin pregnancy, one placenta, one amniotic sac
Use additional code:
code from category Z3A, Weeks of gestation, to identify the specific week of the pregnancy, if known. (per Chapter 15)
Specifically for this code:
conjoined twins (O30.02-)
From Chapter 15:
supervision of normal pregnancy (Z34.-)
From Chapter 15:
mental and behavioral disorders associated with the puerperium (F53)
obstetrical tetanus (A34)
postpartum necrosis of pituitary gland (E23.0)
puerperal osteomalacia (M83.0)
From Chapter 15:
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
O30.01 is a "category code," which means it's non-billable. Billable codes require more specificity. Use the list below to navigate to codes that are more specific:
10
O30.011
Twin pregnancy, monochorionic/monoamniotic, first trimester
Billable
10
O30.012
Twin pregnancy, monochorionic/monoamniotic, second trimester
Billable
10
O30.013
Twin pregnancy, monochorionic/monoamniotic, third trimester