Z3A.3
ICD-10Non-billable categoryWeeks of gestation of pregnancy, weeks 30-39
Official ICD-10-CM descriptor (FY2026)
Weeks of gestation of pregnancy, weeks 30-39
Z3A.3 is a category heading, not a billable code. CMS does not accept it on a claim; report one of the more specific codes beneath it.
ICD-10-CM FY2026 defines 10 codes beneath Z3A.3. See the ICD-10-CM index for what this site publishes.
Related codes in Z3A
Where this code sits
- Parent code
- Z3A
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ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.