ICD-10-CM Code Z3A

Weeks of gestation

Version 2020 Non-Billable Code

Not Valid for Submission

Z3A is a "header" nonspecific and non-billable code code, consider using a code with a higher level of specificity for a diagnosis of weeks of gestation. The code is NOT valid for the year 2020 for the submission of HIPAA-covered transactions.

ICD-10:Z3A
Short Description:Weeks of gestation
Long Description:Weeks of gestation

Consider the following ICD-10 codes with a higher level of specificity:

  • Z3A.0 - Weeks of gestation of pregnancy, unspecified or less than 10 weeks
  • Z3A.00 - Weeks of gestation of pregnancy not specified
  • Z3A.01 - Less than 8 weeks gestation of pregnancy
  • Z3A.08 - 8 weeks gestation of pregnancy
  • Z3A.09 - 9 weeks gestation of pregnancy
  • Z3A.1 - Weeks of gestation of pregnancy, weeks 10-19
  • Z3A.10 - 10 weeks gestation of pregnancy
  • Z3A.11 - 11 weeks gestation of pregnancy
  • Z3A.12 - 12 weeks gestation of pregnancy
  • Z3A.13 - 13 weeks gestation of pregnancy
  • Z3A.14 - 14 weeks gestation of pregnancy
  • Z3A.15 - 15 weeks gestation of pregnancy
  • Z3A.16 - 16 weeks gestation of pregnancy
  • Z3A.17 - 17 weeks gestation of pregnancy
  • Z3A.18 - 18 weeks gestation of pregnancy
  • Z3A.19 - 19 weeks gestation of pregnancy
  • Z3A.2 - Weeks of gestation of pregnancy, weeks 20-29
  • Z3A.20 - 20 weeks gestation of pregnancy
  • Z3A.21 - 21 weeks gestation of pregnancy
  • Z3A.22 - 22 weeks gestation of pregnancy
  • Z3A.23 - 23 weeks gestation of pregnancy
  • Z3A.24 - 24 weeks gestation of pregnancy
  • Z3A.25 - 25 weeks gestation of pregnancy
  • Z3A.26 - 26 weeks gestation of pregnancy
  • Z3A.27 - 27 weeks gestation of pregnancy
  • Z3A.28 - 28 weeks gestation of pregnancy
  • Z3A.29 - 29 weeks gestation of pregnancy
  • Z3A.3 - Weeks of gestation of pregnancy, weeks 30-39
  • Z3A.30 - 30 weeks gestation of pregnancy
  • Z3A.31 - 31 weeks gestation of pregnancy
  • Z3A.32 - 32 weeks gestation of pregnancy
  • 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

Tabular List of Diseases and Injuries

The Tabular List of Diseases and Injuries is a list of ICD-10 codes, organized "head to toe" into chapters and sections with guidance for inclusions, exclusions, descriptions and more. The following references are applicable to the code Z3A:

Code First

Code First
Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions, the ICD-10-CM has a coding convention that requires the underlying condition be sequenced first followed by the manifestation. Wherever such a combination exists, there is a "use additional code" note at the etiology code, and a "code first" note at the manifestation code. These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation.
  • complications of pregnancy, childbirth and the puerperium O09 O9A

  • Codes from category Z3A are for use, only on the maternal record, to indicate the weeks of gestation of the pregnancy, if known.

Code Classification

  • Factors influencing health status and contact with health services (Z00–Z99)
    • Persons encountering health services in circumstances related to reproduction (Z30-Z39)
      • Weeks of gestation (Z3A)

Code History

  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016
    (First year ICD-10-CM implemented into the HIPAA code set)
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020