ICD-10-CM 2027 diagnosis code

Z34Encounter for supervision of normal pregnancy

Not billable — use a more specific code

Z34 is a header code, so it can't be reported by itself. Choose one of the 3 more specific codes beneath it.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About Z34

Z34 is the ICD-10-CM diagnosis code for encounter for supervision of normal pregnancy. It belongs to block Z30-Z39 (persons encountering health services in circumstances related to reproduction) and chapter 21 (factors influencing health status and contact with health services). It is a header code, so it can't be reported by itself; one of its 3 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: Z34.0 (pregnancy), Z34.8 (pregnancy) and Z34.9 (unspecified).

Don't report Z34 together with the conditions in its Excludes1 note: any complication of pregnancy (O00-O9A), encounter for pregnancy test (Z32.0-) and encounter for supervision of high risk pregnancy (O09.-).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Specific codes under Z34

Coding notes

Excludes1Not coded here — never report together with this code

any complication of pregnancy (O00-O9A)
encounter for pregnancy test (Z32.0-)
encounter for supervision of high risk pregnancy (O09.-)

Notes that apply from higher levels

Instructions written at a parent level also apply to Z34.

Broader instructions also apply from Chapter 21: Factors influencing health status and contact with health services.

Codes whose notes reference Z34

Z36Excludes2

Code history

2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027

FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
No changes since FY2016.

Common questions about Z34

Is Z34 billable?: No. Z34 is a header code. Report one of its more specific subcodes instead.