Wiki Rhogam Injection Diagnosis code

Rhogam injection code diagnosis

We are still debating this one as well. Z31.82 is what we were told by the Brown Coding Agency but WA Medicaid denied it. They did however pay Z.23, encounter for immunization. Has anyone else gotten paid & what code did you use?
 
Our office bills the injection based on the trimester

first-O36.0110
second-O36.0120
third: O36.0130

We have not had any denials or issues.
 
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