Wiki ICD-10 diagnosis code for dating ultrasound?

[asehr]

Does anyone know what ICD 10 code to use for dating ultrasound? The only code I have been able to come up with is Z36 antenatal screening of mother, but wouldn't that code be used for the anatomy scan? Or would I have to add the gestation age along with the Z36 code for the dating u/s?
Thanks!
Amber

 

[spap@apprhs.org]

I have been using Z36 on both dating and 20 wk. Did you happen to find out anything definite on this? Thanks!

 

[TYSON1234]

I have been using Uterine size-date discrepancy O26.841-O26849 codes.