1. Z3A Weeks of gestation

    1. Z3A.0 Weeks of gestation of pregnancy, unspecified or less than 10 weeks

      1. Z3A.00 Weeks of gestation of pregnancy not specified

      2. Z3A.01 Less than 8 weeks gestation of pregnancy

      3. Z3A.08 8 weeks gestation of pregnancy

      4. Z3A.09 9 weeks gestation of pregnancy

    2. Z3A.1 Weeks of gestation of pregnancy, weeks 10-19

      1. Z3A.10 10 weeks gestation of pregnancy

      2. Z3A.11 11 weeks gestation of pregnancy

      3. Z3A.12 12 weeks gestation of pregnancy

      4. Z3A.13 13 weeks gestation of pregnancy

      5. Z3A.14 14 weeks gestation of pregnancy

      6. Z3A.15 15 weeks gestation of pregnancy

      7. Z3A.16 16 weeks gestation of pregnancy

      8. Z3A.17 17 weeks gestation of pregnancy

      9. Z3A.18 18 weeks gestation of pregnancy

      10. Z3A.19 19 weeks gestation of pregnancy

    3. Z3A.2 Weeks of gestation of pregnancy, weeks 20-29

      1. Z3A.20 20 weeks gestation of pregnancy

      2. Z3A.21 21 weeks gestation of pregnancy

      3. Z3A.22 22 weeks gestation of pregnancy

      4. Z3A.23 23 weeks gestation of pregnancy

      5. Z3A.24 24 weeks gestation of pregnancy

      6. Z3A.25 25 weeks gestation of pregnancy

      7. Z3A.26 26 weeks gestation of pregnancy

      8. Z3A.27 27 weeks gestation of pregnancy

      9. Z3A.28 28 weeks gestation of pregnancy

      10. Z3A.29 29 weeks gestation of pregnancy

    4. Z3A.3 Weeks of gestation of pregnancy, weeks 30-39

      1. Z3A.30 30 weeks gestation of pregnancy

      2. Z3A.31 31 weeks gestation of pregnancy

      3. Z3A.32 32 weeks gestation of pregnancy

      4. Z3A.33 33 weeks gestation of pregnancy

      5. Z3A.34 34 weeks gestation of pregnancy

      6. Z3A.35 35 weeks gestation of pregnancy

      7. Z3A.36 36 weeks gestation of pregnancy

      8. Z3A.37 37 weeks gestation of pregnancy

      9. Z3A.38 38 weeks gestation of pregnancy

      10. Z3A.39 39 weeks gestation of pregnancy

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

      1. Z3A.40 40 weeks gestation of pregnancy

      2. Z3A.41 41 weeks gestation of pregnancy

      3. Z3A.42 42 weeks gestation of pregnancy

      4. Z3A.49 Greater than 42 weeks gestation of pregnancy

Abbreviations used here:

NEC Not elsewhere classifiable
This abbreviation in the Tabular List represents “other specified”. When a specific code is not available for a condition, the Tabular List includes an NEC entry under a code to identify the code as the “other specified” code.

NOS Not otherwise specified
This abbreviation is the equivalent of unspecified.