ICD-10-CM Codes
O00-O9A Pregnancy, childbirth and the puerperium
O30-O48 Maternal care related to the fetus and amniotic cavity and possible delivery problems
O40- Polyhydramnios
2021 ICD-10-CM Diagnosis Code O40

2021 ICD-10-CM Diagnosis Code O40

Polyhydramnios

2016

2017

2018

2019

2020

2021

Non-Billable/Non-Specific Code

O40 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
The 2021 edition of ICD-10-CM O40 became effective on October 1, 2020.
This is the American ICD-10-CM version of O40 - other international versions of ICD-10 O40 may differ.

Type 1 Excludes

Type 1 Excludes Help

A type 1 excludes note is a pure excludes. It means "not coded here". A type 1 excludes note indicates that the code excluded should never be used at the same time as O40. A type 1 excludes note is for used for when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.

encounter for suspected maternal and fetal conditions ruled out (
ICD-10-CM Diagnosis Code Z03.7
Encounter for suspected maternal and fetal conditions ruled out
Applicable To
- Encounter for suspected maternal and fetal conditions not found
Type 1 Excludes
- known or suspected fetal anomalies affecting management of mother, not ruled out (O26.-, O35.-, O36.-, O40.-, O41.-)
Z03.7-
)

Includes

Includes Help

"Includes" further defines, or give examples of, the content of the code or category.

hydramnios

The following code(s) above O40 contain annotation back-references

Annotation Back-References

In this context, annotation back-references refer to codes that contain:

Applicable To annotations, or
Code Also annotations, or
Code First annotations, or
Excludes1 annotations, or
Excludes2 annotations, or
Includes annotations, or
Note annotations, or
Use Additional annotations

that may be applicable to O40:

O00-O9A
2021 ICD-10-CM Range O00-O9A
Pregnancy, childbirth and the puerperium
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
Type 1 Excludes
- supervision of normal pregnancy (Z34.-)
Type 2 Excludes
- mental and behavioral disorders associated with the puerperium (F53.-)
- obstetrical tetanus (A34)
- postpartum necrosis of pituitary gland (E23.0)
- puerperal osteomalacia (M83.0)
Use Additional
- code from category Z3A, Weeks of gestation, to identify the specific week of the pregnancy, if known.
Pregnancy, childbirth and the puerperium

Clinical Information

A condition of abnormally high amniotic fluid volume, such as greater than 2,000 ml in the last trimester and usually diagnosed by ultrasonographic criteria (amniotic fluid index). It is associated with maternal diabetes mellitus; multiple pregnancy; chromosomal disorders; and congenital abnormalities.
An excess quantity of amniotic fluid in the amniotic sac as compared to normal values.

Code History

2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
2017 (effective 10/1/2016): No change
2018 (effective 10/1/2017): No change
2019 (effective 10/1/2018): No change
2020 (effective 10/1/2019): No change
2021 (effective 10/1/2020): No change

Code annotations containing back-references to O40:

Type 1 Excludes: Z03.7

ICD-10-CM Diagnosis Code Z03.7
Encounter for suspected maternal and fetal conditions ruled out
Applicable To
- Encounter for suspected maternal and fetal conditions not found
Type 1 Excludes
- known or suspected fetal anomalies affecting management of mother, not ruled out (O26.-, O35.-, O36.-, O40.-, O41.-)

Diagnosis Index entries containing back-references to O40:

Pregnancy (single) (uterine) Z33.1
- see also Delivery and Puerperal
ICD-10-CM Diagnosis Code Z33.1
Pregnant state, incidental
Applicable To
Pregnancy NOS
Pregnant state NOS
Type 1 Excludes
complications of pregnancy (O00-O9A)
pregnant state, gestational carrier (Z33.3)
- complicated by (care of) (management affected by)
  - polyhydramnios O40-

ICD-10-CM Codes Adjacent To O40

O36.92X5 …… fetus 5

O36.92X9 …… other fetus

O36.93 Maternal care for fetal problem, unspecified, third trimester

O36.93X0 …… not applicable or unspecified

O36.93X1 …… fetus 1

O36.93X2 …… fetus 2

O36.93X3 …… fetus 3

O36.93X4 …… fetus 4

O36.93X5 …… fetus 5

O36.93X9 …… other fetus

O40 Polyhydramnios

O40.1 Polyhydramnios, first trimester

O40.1XX0 …… not applicable or unspecified

O40.1XX1 …… fetus 1

O40.1XX2 …… fetus 2

O40.1XX3 …… fetus 3

O40.1XX4 …… fetus 4

O40.1XX5 …… fetus 5

O40.1XX9 …… other fetus

O40.2 Polyhydramnios, second trimester

O40.2XX0 …… not applicable or unspecified

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.

2021 ICD-10-CM Diagnosis Code O40

Polyhydramnios

Encounter for suspected maternal and fetal conditions ruled out

Pregnancy, childbirth and the puerperium

Encounter for suspected maternal and fetal conditions ruled out

Pregnant state, incidental