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Pregnancy, childbirth and the puerperium (O00-O9A)

Note:: 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, if applicable, from category Z3A, Weeks of gestation, to identify the specific week of the pregnancy, if known.
Excludes 1:: supervision of normal pregnancy (Z34.-)
Excludes 2:: mental and behavioral disorders associated with the puerperium (F53.-)
obstetrical tetanus (A34)
postpartum necrosis of pituitary gland (E23.0)
puerperal osteomalacia (M83.0)

Edema, proteinuria and hypertensive disorders in pregnancy, childbirth and the puerperium (O10-O16)

O10

Pre-existing hypertension complicating pregnancy, childbirth and the puerperium [+]

Includes:	pre-existing hypertension with pre-existing proteinuria complicating pregnancy, childbirth and the puerperium
Excludes 2:	pre-existing hypertension with superimposed pre-eclampsia complicating pregnancy, childbirth and the puerperium (O11.-)

O10.0

Pre-existing essential hypertension complicating pregnancy, childbirth and the puerperium [+]
Any condition in I10 specified as a reason for obstetric care during pregnancy, childbirth or the puerperium

O10.1

Pre-existing hypertensive heart disease complicating pregnancy, childbirth and the puerperium [+]
Any condition in I11 specified as a reason for obstetric care during pregnancy, childbirth or the puerperium

Use additional

code from I11 to identify the type of hypertensive heart disease

O10.2

Pre-existing hypertensive chronic kidney disease complicating pregnancy, childbirth and the puerperium [+]
Any condition in I12 specified as a reason for obstetric care during pregnancy, childbirth or the puerperium

Use additional

code from I12 to identify the type of hypertensive chronic kidney disease

O10.3

Pre-existing hypertensive heart and chronic kidney disease complicating pregnancy, childbirth and the puerperium [+]
Any condition in I13 specified as a reason for obstetric care during pregnancy, childbirth or the puerperium

Use additional

code from I13 to identify the type of hypertensive heart and chronic kidney disease

O10.4

Pre-existing secondary hypertension complicating pregnancy, childbirth and the puerperium [+]
Any condition in I15 specified as a reason for obstetric care during pregnancy, childbirth or the puerperium

Use additional

code from I15 to identify the type of secondary hypertension

O10.9

Unspecified pre-existing hypertension complicating pregnancy, childbirth and the puerperium [+]

O11

Pre-existing hypertension with pre-eclampsia [+]

Includes:	conditions in O10 complicated by pre-eclampsia pre-eclampsia superimposed pre-existing hypertension
Use additional	code from O10 to identify the type of hypertension

O12

Gestational [pregnancy-induced] edema and proteinuria without hypertension [+]

O12.0

Gestational edema [+]

O12.1

Gestational proteinuria [+]

O12.2

Gestational edema with proteinuria [+]

O13

Gestational [pregnancy-induced] hypertension without significant proteinuria [+]

Includes:

gestational hypertension NOS
transient hypertension of pregnancy

O14

Pre-eclampsia [+]

Excludes 1:

pre-existing hypertension with pre-eclampsia (O11)

O14.0

Mild to moderate pre-eclampsia [+]

O14.1

Severe pre-eclampsia [+]

Excludes 1:

HELLP syndrome (O14.2-)

O14.2

HELLP syndrome [+]
Severe pre-eclampsia with hemolysis, elevated liver enzymes and low platelet count (HELLP)

O14.9

Unspecified pre-eclampsia [+]

O15

Eclampsia [+]

Includes:

convulsions following conditions in O10-O14 and O16

O16

Unspecified maternal hypertension [+]