Maternal care for Anti-A sensitization, first tri, unsp

This code signifies a pregnancy complicated by maternal Anti-A sensitization, which occurs when an Rh-negative mother develops antibodies against the A antigen, typically due to a previous exposure. This specific code is used when the sensitization is identified or managed during the first trimester of pregnancy.

Apply this code when a pregnant patient, in her first trimester, is receiving care for Anti-A sensitization. Documentation should clearly state the presence of Anti-A antibodies and the gestational age at the time of diagnosis or management. This code is appropriate when the specific type of sensitization (e.g., Anti-A) is documented, rather than a general Rh isoimmunization.

• Ensure documentation specifies "Anti-A" sensitization, not just general Rh incompatibility.
• Verify the trimester of pregnancy; this code is specific to the first trimester.
• Do not use this code for other types of maternal isoimmunization (e.g., Anti-D, Anti-B).