2020 ICD-10-CM Codes for Weeks of gestation (Z3A)

Instructional Notations

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.
    • ICD-10 Index

      • 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)
            • Z3A - Weeks of gestation NON-BILLABLE CODE
            • Z3A.0 - Weeks of gestation of pregnancy, unsp or less than 10 weeks NON-BILLABLE CODE
            • Z3A.00 - Weeks of gestation of pregnancy not specified BILLABLE CODE
            • Z3A.01 - Less than 8 weeks gestation of pregnancy BILLABLE CODE
            • Z3A.08 - 8 weeks gestation of pregnancy BILLABLE CODE
            • Z3A.09 - 9 weeks gestation of pregnancy BILLABLE CODE
            • Z3A.1 - Weeks of gestation of pregnancy, weeks 10-19 NON-BILLABLE CODE
            • Z3A.10 - 10 weeks gestation of pregnancy BILLABLE CODE
            • Z3A.11 - 11 weeks gestation of pregnancy BILLABLE CODE
            • Z3A.12 - 12 weeks gestation of pregnancy BILLABLE CODE
            • Z3A.13 - 13 weeks gestation of pregnancy BILLABLE CODE
            • Z3A.14 - 14 weeks gestation of pregnancy BILLABLE CODE
            • Z3A.15 - 15 weeks gestation of pregnancy BILLABLE CODE
            • Z3A.16 - 16 weeks gestation of pregnancy BILLABLE CODE
            • Z3A.17 - 17 weeks gestation of pregnancy BILLABLE CODE
            • Z3A.18 - 18 weeks gestation of pregnancy BILLABLE CODE
            • Z3A.19 - 19 weeks gestation of pregnancy BILLABLE CODE
            • Z3A.2 - Weeks of gestation of pregnancy, weeks 20-29 NON-BILLABLE CODE
            • Z3A.20 - 20 weeks gestation of pregnancy BILLABLE CODE
            • Z3A.21 - 21 weeks gestation of pregnancy BILLABLE CODE
            • Z3A.22 - 22 weeks gestation of pregnancy BILLABLE CODE
            • Z3A.23 - 23 weeks gestation of pregnancy BILLABLE CODE
            • Z3A.24 - 24 weeks gestation of pregnancy BILLABLE CODE
            • Z3A.25 - 25 weeks gestation of pregnancy BILLABLE CODE
            • Z3A.26 - 26 weeks gestation of pregnancy BILLABLE CODE
            • Z3A.27 - 27 weeks gestation of pregnancy BILLABLE CODE
            • Z3A.28 - 28 weeks gestation of pregnancy BILLABLE CODE
            • Z3A.29 - 29 weeks gestation of pregnancy BILLABLE CODE
            • Z3A.3 - Weeks of gestation of pregnancy, weeks 30-39 NON-BILLABLE CODE
            • Z3A.30 - 30 weeks gestation of pregnancy BILLABLE CODE
            • Z3A.31 - 31 weeks gestation of pregnancy BILLABLE CODE
            • Z3A.32 - 32 weeks gestation of pregnancy BILLABLE CODE
            • Z3A.33 - 33 weeks gestation of pregnancy BILLABLE CODE
            • Z3A.34 - 34 weeks gestation of pregnancy BILLABLE CODE
            • Z3A.35 - 35 weeks gestation of pregnancy BILLABLE CODE
            • Z3A.36 - 36 weeks gestation of pregnancy BILLABLE CODE
            • Z3A.37 - 37 weeks gestation of pregnancy BILLABLE CODE
            • Z3A.38 - 38 weeks gestation of pregnancy BILLABLE CODE
            • Z3A.39 - 39 weeks gestation of pregnancy BILLABLE CODE
            • Z3A.4 - Weeks of gestation of pregnancy, weeks 40 or greater NON-BILLABLE CODE
            • Z3A.40 - 40 weeks gestation of pregnancy BILLABLE CODE
            • Z3A.41 - 41 weeks gestation of pregnancy BILLABLE CODE
            • Z3A.42 - 42 weeks gestation of pregnancy BILLABLE CODE
            • Z3A.49 - Greater than 42 weeks gestation of pregnancy BILLABLE CODE