Type A blood, Rh negative

This code indicates a patient possesses Type A blood and lacks the Rh factor antigen on their red blood cells. This specific blood type is crucial for safe blood transfusions and for managing pregnancies in Rh-negative individuals.

This code is used to document a patient's known blood type, particularly when it is relevant for medical management, such as prior to surgery, during pregnancy, or for patients requiring frequent transfusions. It is also applicable when establishing a patient's baseline medical information.

• Only assign this code when the patient's blood type is definitively documented as Type A, Rh negative.
• Do not use this code for Rh-positive individuals or other blood types.
• This code is for informational purposes and typically accompanies other codes related to the reason for the encounter.