Is Z3A a billable ICD-10-CM code?

No. Z3A is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does Z3A sit in the tabular list?

Factors influencing health status and contact with health services (Z00-Z99), in the block Persons encountering health services in circumstances related to reproduction (Z30-Z39).

Z3A

Z3A — Weeks of gestation

Non-billable headerICD-10-CM

Z3A is a non-billable header ICD-10-CM code for weeks of gestation. It cannot be billed on its own: choose one of the more specific child codes below.

Code first

The underlying condition must be sequenced before this code.

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

Notes

Additional guidance from the ICD-10-CM tabular list.

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

Risk adjustment

Z3A does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Code to one of these instead Z3A

5 child codes. Green means billable.

Questions about Z3A

Is Z3A a billable ICD-10-CM code?: No. Z3A is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does Z3A sit in the tabular list?: Factors influencing health status and contact with health services (Z00-Z99), in the block Persons encountering health services in circumstances related to reproduction (Z30-Z39).