Z36Encounter for antenatal screening of mother

Z36 is the ICD-10-CM diagnosis code for encounter for antenatal screening of mother. 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 8 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: Z36.0 (anomalies), Z36.1 (level), Z36.2 (follow-up), Z36.3 (malformations), Z36.4 (retardation), Z36.5 (isoimmunization), Z36.8 (screening) and Z36.9 (unspecified).

Don't report Z36 together with the conditions in its Excludes1 note: diagnostic examination- code to sign or symptom, encounter for suspected maternal and fetal conditions ruled out (Z03.7-) and suspected fetal condition affecting management of pregnancy - code to condition in Chapter 15.

The conditions in its Excludes2 note aren't part of Z36, but may be coded alongside it if the patient has both: abnormal findings on antenatal screening of mother (O28.-), genetic counseling and testing (Z31.43-, Z31.5) and routine prenatal care (Z34).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015, and changed in FY2018 (expanded into subcodes).