O22.31

Deep phlebothrombosis in pregnancy, first trimester

Billable / specific

O22.31 is a billable, specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes in FY2027.

Inclusion terms

Note: CODES FROM THIS CHAPTER ARE FOR USE ONLY ON MATERNAL RECORDS, NEVER ON NEWBORN RECORDS
Note: 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)
Note: Trimesters are counted from the first day of the last menstrual period. They are defined as follows:
Note: 1st trimester- less than 14 weeks 0 days
Note: 2nd trimester- 14 weeks 0 days to less than 28 weeks 0 days
Note: 3rd trimester- 28 weeks 0 days until delivery

Not coded here — never report together with this code.

supervision of normal pregnancy (Z34.-) (from O22)
venous complications of: (from O22)
abortion NOS (O03.9) (from O22)
ectopic or molar pregnancy (O08.7) (from O22)
failed attempted abortion (O07.35) (from O22)
induced abortion (O04.85) (from O22)
spontaneous abortion (O03.89) (from O22)

Not included here — may be reported together when both conditions exist.

mental and behavioral disorders associated with the puerperium (F53.-) (from O22)
obstetrical tetanus (A34) (from O22)
postpartum necrosis of pituitary gland (E23.0) (from O22)
puerperal osteomalacia (M83.0) (from O22)
maternal care related to the fetus and amniotic cavity and possible delivery problems (O30-O48) (from O22)
maternal diseases classifiable elsewhere but complicating pregnancy, labor and delivery, and the puerperium (O98-O99) (from O22)
obstetric pulmonary embolism (O88.-) (from O22)
venous complications and hemorrhoids of childbirth and the puerperium (O87.-) (from O22)

Add a code to identify the following, if applicable.

code to identify the deep vein thrombosis (I82.4-, I82.5-, I82.62-, I82.72-) (from O22.3)
code, if applicable, for associated long-term (current) use of anticoagulants (Z79.01) (from O22.3)
code, if applicable, from category Z3A, Weeks of gestation, to identify the specific week of the pregnancy, if known. (from O22)