ICD-10-CM 2027 diagnosis code
Z31.4Encounter for procreative investigation and testing
Z31.4 is a header code, so it can't be reported by itself. Choose one of the 5 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 Z31.4
Z31.4 is the ICD-10-CM diagnosis code for encounter for procreative investigation and testing. It belongs to category Z31 (encounter for procreative management), 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 5 subcodes must be used instead.
Within Z31 (encounter for procreative management), Z31.4 is specifically for encounter for procreative investigation and testing. Related codes cover reversal of previous sterilization (Z31.0), procreative genetic counseling (Z31.5), general counseling and advice on procreation (Z31.6), and counseling for gestational carrier (Z31.7), other procreative management (Z31.8) and unspecified (Z31.9).
To report this condition, pick the subcode that matches the documentation: Z31.41 (testing), Z31.42 (reversal), Z31.43 (management), Z31.44 (management) and Z31.49 (testing).
Don't report Z31.4 together with the conditions in its Excludes1 note: postvasectomy sperm count (Z30.8).
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 Z31.4
- Z31.41Encounter for fertility testingBillable
- Z31.42Aftercare following sterilization reversalBillable
- Z31.43Encounter for genetic testing of female for procreative management
- Z31.44Encounter for genetic testing of male for procreative management
- Z31.49Encounter for other procreative investigation and testingBillable
Coding notes
- postvasectomy sperm count (Z30.8)
Notes that apply from higher levels
Instructions written at a parent level also apply to Z31.4.
Broader instructions also apply from Chapter 21: Factors influencing health status and contact with health services.
Codes whose notes reference Z31.4
- Z13.7Excludes1
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 Z31.4
Is Z31.4 billable?
- No. Z31.4 is a header code. Report one of its more specific subcodes instead.