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Z3A.1

Non-billable

Weeks of gestation of pregnancy, weeks 10-19

Z3A.1 is the ICD-10-CM code for Weeks of gestation of pregnancy, weeks 10-19. It is a non-billable category code — use a more specific child code such as Z3A.10 for billing.

Status
Header (non-billable)
Chapter
Z00-Z99
Parent
Z3A
Subcodes
10
Edition
FY2026

Z00-Z99 Factors influencing health status and contact with health services

No additional coding notes for this code.

Frequently asked questions

What is ICD-10 code Z3A.1?
Z3A.1 is the ICD-10-CM code for "Weeks of gestation of pregnancy, weeks 10-19". It falls under Z00-Z99 Factors influencing health status and contact with health services.
Is Z3A.1 a billable code?
No — Z3A.1 is a non-billable header code. Use a more specific child code (such as Z3A.10) for billing.
What are the subcodes of Z3A.1?
Z3A.1 has 10 more specific child codes, including Z3A.10, Z3A.11, Z3A.12.

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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