ICD-10-CM Codes
Z00-Z99
Z30-Z3A
Z3A-
2023 ICD-10-CM Diagnosis Code Z3A.42

2023 ICD-10-CM Diagnosis Code Z3A.42

42 weeks gestation of pregnancy

2016

2017

2018

2019

2020

2021

2022

2023

Billable/Specific Code

Maternity Dx (12-55 years)

Female Dx

POA Exempt

Z3A.42 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
The 2023 edition of ICD-10-CM Z3A.42 became effective on October 1, 2022.
This is the American ICD-10-CM version of Z3A.42 - other international versions of ICD-10 Z3A.42 may differ.

ICD-10-CM Coding Rules

Z3A.42 is applicable to maternity patients aged 12 - 55 years inclusive.
Z3A.42 is applicable to female patients.

The following code(s) above Z3A.42 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 Z3A.42:

Z00-Z99
2023 ICD-10-CM Range Z00-Z99
Factors influencing health status and contact with health services
Note
- Z codes represent reasons for encounters. A corresponding procedure code must accompany a Z code if a procedure is performed. Categories Z00-Z99 are provided for occasions when circumstances other than a disease, injury or external cause classifiable to categories A00-Y89 are recorded as 'diagnoses' or 'problems'. This can arise in two main ways:
- (a) When a person who may or may not be sick encounters the health services for some specific purpose, such as to receive limited care or service for a current condition, to donate an organ or tissue, to receive prophylactic vaccination (immunization), or to discuss a problem which is in itself not a disease or injury.
- (b) When some circumstance or problem is present which influences the person's health status but is not in itself a current illness or injury.
Factors influencing health status and contact with health services
Z3A
ICD-10-CM Diagnosis Code Z3A
Weeks of gestation
Code First
- obstetric condition or encounter for delivery (O09-O60, O80-O82)
Note
- Codes from category Z3A are for use, only on the maternal record, to indicate the weeks of gestation of the pregnancy, if known.
Weeks of gestation

Present On Admission

POA Help

"Present On Admission" is defined as present at the time the order for inpatient admission occurs — conditions that develop during an outpatient encounter, including emergency department, observation, or outpatient surgery, are considered POA.

Z3A.42 is considered exempt from POA reporting.

ICD-10-CM Z3A.42 is grouped within Diagnostic Related Group(s) (MS-DRG v40.0):

951 Other factors influencing health status

Convert Z3A.42 to ICD-9-CM

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
2022 (effective 10/1/2021): No change
2023 (effective 10/1/2022): No change

Diagnosis Index entries containing back-references to Z3A.42:

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)
- weeks of gestation
  - 42 weeks Z3A.42

ICD-10-CM Codes Adjacent To Z3A.42

Z3A.33 33 weeks gestation of pregnancy

Z3A.34 34 weeks gestation of pregnancy

Z3A.35 35 weeks gestation of pregnancy

Z3A.36 36 weeks gestation of pregnancy

Z3A.37 37 weeks gestation of pregnancy

Z3A.38 38 weeks gestation of pregnancy

Z3A.39 39 weeks gestation of pregnancy

Z3A.4 Weeks of gestation of pregnancy, weeks 40 or greater

Z3A.40 40 weeks gestation of pregnancy

Z3A.41 41 weeks gestation of pregnancy

Z3A.42 42 weeks gestation of pregnancy

Z3A.49 Greater than 42 weeks gestation of pregnancy

Z37 Outcome of delivery

Z37.0 Single live birth

Z37.1 Single stillbirth

Z37.2 Twins, both liveborn

Z37.3 Twins, one liveborn and one stillborn

Z37.4 Twins, both stillborn

Z37.5 Other multiple births, all liveborn

Z37.50 Multiple births, unspecified, all liveborn

Z37.51 Triplets, all liveborn

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

2023 ICD-10-CM Diagnosis Code Z3A.42

42 weeks gestation of pregnancy

Factors influencing health status and contact with health services

Weeks of gestation

Pregnant state, incidental