Z3A.1
Non-billableWeeks of gestation of pregnancy, weeks 10-19
Weeks of gestation of pregnancy, weeks 10-19
This is a header/category code. For billing purposes, use a more specific child code from the list below.
Cross-references
UMLS
Coding Notes
Code First
The underlying condition must be sequenced before this code
Child Codes (10)
Z3A.1010 weeks gestation of pregnancy
Z3A.1111 weeks gestation of pregnancy
Z3A.1212 weeks gestation of pregnancy
Z3A.1313 weeks gestation of pregnancy
Z3A.1414 weeks gestation of pregnancy
Z3A.1515 weeks gestation of pregnancy
Z3A.1616 weeks gestation of pregnancy
Z3A.1717 weeks gestation of pregnancy
Z3A.1818 weeks gestation of pregnancy
Z3A.1919 weeks gestation of pregnancy
Related Codes(4)
How Z3A.1 differs from sibling codes
All children of Z3A share the same parent. The wording below is what mechanically separates each sibling from Z3A.1.
Z3A.0Weeks of gestation of pregnancy, unsp or less than 10 weeks
Specifier: "unspecified or less than 10 weeks" vs. "weeks 10-19" in Z3A.1.
Z3A.2Weeks of gestation of pregnancy, weeks 20-29
Wording: "20-29" vs. "10-19" in Z3A.1.
Z3A.3Weeks of gestation of pregnancy, weeks 30-39
Wording: "30-39" vs. "10-19" in Z3A.1.
Z3A.4Weeks of gestation of pregnancy, weeks 40 or greater
Specifier: "40 or greater" vs. "10-19" in Z3A.1.
Also Known As / Clinical Terms(1)
Common questions
What is the ICD-10-CM code for Weeks of gestation of pregnancy, weeks 10-19?
Weeks of gestation of pregnancy, weeks 10-19 is coded as Z3A.1 in ICD-10-CM.
What is ICD-10 code Z3A.1?
Z3A.1 is the ICD-10-CM identifier for Weeks of gestation of pregnancy, weeks 10-19. It is included in the official 2025 release of ICD-10-CM published by CMS and NCHS.
Why is Z3A.1 non-billable?
Z3A.1 is a category code; ICD-10-CM requires the most specific child code for claim submission. The billable child codes under Z3A.1 are: Z3A.10, Z3A.11, Z3A.12, Z3A.13, Z3A.14, Z3A.15, and 4 more.
What is the parent code of Z3A.1?
Z3A.1 sits under Z3A (Weeks of gestation) in the ICD-10-CM hierarchy.
What chapter does Z3A.1 belong to?
Z3A.1 is in Chapter 22: Factors Influencing Health Status and Contact With Health Services.
What is the UMLS mapping for Z3A.1?
Z3A.1 maps to UMLS C3264086.
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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.