If I remember correctly, in a normal pregnancy and delivery, Rhogam is administered at 28 weeks and then again within 72 hours after giving birth.
Technically speaking, the
Rhogam administered after birth is given to a woman who is no longer pregnant - so I think you have some leeway with using the O36.XXXXX code for a woman who is no longer pregnant.
In technical, biological terms, what is the difference between a woman delivered of a fetus at term, or delivered of a fetus some time before term? If the baby became distressed and needed to be delivered by C-Section at 6 months, and the woman needed Rhogam, would you argue that she doesn't qualify for the Rhogam? I suggest that the same logic applies to abortion. This may be crude, but delivery of a fetus by C-Section or by abortion is still delivery of a fetus, particularly in the case where the C-Section is performed to deliver a fetus that has expired in-utero.
Look at the wording attached to the 036 codes at this link. Note that the focus is on the woman who is / has been pregnant. This certainly applies in your case.
http://www.icd10data.com/ICD10CM/Codes/O00-O9A/O30-O48/O36-O36.0190 = Maternal care for anti-D [Rh] antibodies, unspecified trimester
Or, simply pick the code that applies to the trimester in which the abortion was performed.
You could also consider Code Z88.8, Allergy status to other drugs, medicaments and biological substances status
http://www.icd10data.com/ICD10CM/Codes/Z00-Z99/Z77-Z99/Z88-/Z88.8The second phrase in the following ICD-10 category description suggest that this can be used for other than a
Family History designation:
Persons with potential health hazards related to family and personal history and certain conditions influencing health status.
Or, perhaps the patient's insurance carrier could give you some guidance as to how to code so that they will pay.