DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

Z3A Weeks of gestation

  • Header · not billable

Z3A is not billable. The category heads 38 billable codes in FY2027, grouped under 5 subdivisions.

Index → code

  • Pregnancy (single) (uterine)weeks of gestation8 weeks → Z3A.08
  • Pregnancy (single) (uterine)weeks of gestation9 weeks → Z3A.09
  • Pregnancy (single) (uterine)weeks of gestation10 weeks → Z3A.10

Where it sits

  1. Chapter 21 Factors influencing health status and contact with health services (Z00-Z99)
  2. Z30-Z39 Persons encountering health services in circumstances related to reproduction (Z30-Z39)
  3. Z3A Weeks of gestation
Billable codes
38
Subdivisions
5
CC / MCC codes
0 / 0
HCC V28 codes
0
New FY2027
0
Index entries
38

Codes in Z3A

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

Sources of each column.

Instructions

At Z3A

Notes

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

Code first

  • obstetric condition or encounter for delivery (O09-O60, O80-O82, O94-O9A) O09 O60 O80 O82 O94 O9A

Notes that also apply

Chapter 21 instructions (Notes 3): printed on the chapter 21 page.

Index entries

  • Pregnancy (single) (uterine)weeks of gestationnot specified → Z3A.00
  • Pregnancy (single) (uterine)weeks of gestationless than 8 weeks → Z3A.01
  • Pregnancy (single) (uterine)weeks of gestation8 weeks → Z3A.08
  • Pregnancy (single) (uterine)weeks of gestation9 weeks → Z3A.09
  • Pregnancy (single) (uterine)weeks of gestation10 weeks → Z3A.10
  • Pregnancy (single) (uterine)weeks of gestation11 weeks → Z3A.11
  • Pregnancy (single) (uterine)weeks of gestation12 weeks → Z3A.12
  • Pregnancy (single) (uterine)weeks of gestation13 weeks → Z3A.13
  • Pregnancy (single) (uterine)weeks of gestation14 weeks → Z3A.14
  • Pregnancy (single) (uterine)weeks of gestation15 weeks → Z3A.15
  • Pregnancy (single) (uterine)weeks of gestation16 weeks → Z3A.16
  • Pregnancy (single) (uterine)weeks of gestation17 weeks → Z3A.17
  • Pregnancy (single) (uterine)weeks of gestation18 weeks → Z3A.18
  • Pregnancy (single) (uterine)weeks of gestation19 weeks → Z3A.19
  • Pregnancy (single) (uterine)weeks of gestation20 weeks → Z3A.20
  • Pregnancy (single) (uterine)weeks of gestation21 weeks → Z3A.21
  • Pregnancy (single) (uterine)weeks of gestation22 weeks → Z3A.22
  • Pregnancy (single) (uterine)weeks of gestation23 weeks → Z3A.23
  • Pregnancy (single) (uterine)weeks of gestation24 weeks → Z3A.24
  • Pregnancy (single) (uterine)weeks of gestation25 weeks → Z3A.25
  • Pregnancy (single) (uterine)weeks of gestation26 weeks → Z3A.26
  • Pregnancy (single) (uterine)weeks of gestation27 weeks → Z3A.27
  • Pregnancy (single) (uterine)weeks of gestation28 weeks → Z3A.28
  • Pregnancy (single) (uterine)weeks of gestation29 weeks → Z3A.29
  • Pregnancy (single) (uterine)weeks of gestation30 weeks → Z3A.30
  • Pregnancy (single) (uterine)weeks of gestation31 weeks → Z3A.31
  • Pregnancy (single) (uterine)weeks of gestation32 weeks → Z3A.32
  • Pregnancy (single) (uterine)weeks of gestation33 weeks → Z3A.33
  • Pregnancy (single) (uterine)weeks of gestation34 weeks → Z3A.34
  • Pregnancy (single) (uterine)weeks of gestation35 weeks → Z3A.35
  • Pregnancy (single) (uterine)weeks of gestation36 weeks → Z3A.36
  • Pregnancy (single) (uterine)weeks of gestation37 weeks → Z3A.37
  • Pregnancy (single) (uterine)weeks of gestation38 weeks → Z3A.38
  • Pregnancy (single) (uterine)weeks of gestation39 weeks → Z3A.39
  • Pregnancy (single) (uterine)weeks of gestation40 weeks → Z3A.40
  • Pregnancy (single) (uterine)weeks of gestation41 weeks → Z3A.41
  • Pregnancy (single) (uterine)weeks of gestation42 weeks → Z3A.42
  • Pregnancy (single) (uterine)weeks of gestationgreater than 42 weeks → Z3A.49

NCHS Alphabetic Index. Index first, then the Tabular List.

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