I have not heard that Medicare is covering 90847-Family psychotherapy (conjoint psychotherapy) (with patient present) is being covered for couples or family counseling. My understanding it represent family psychotherapy services for the treatment of mental disorders. So, the focus of the service is about one member of the family's mental health or substance abuse condition and how it affects the family. The following is the full code description per EncoderPro for Payers Professional.
The therapist provides 50 minutes of family psychotherapy in a setting where the care provider meets with the patient and the patient's family jointly. The family is part of the patient evaluation and treatment process. Family dynamics as they relate to the patient's mental status and behavior are a main focus of the sessions. Attention is also given to the impact the patient's condition has on the family, with therapy aimed at improving the interaction between the patient and family members. Reviewing records, communicating with other providers, observing and interpreting patterns of behavior and communication between the patient and family members, and decision making regarding treatment, including medication management or any physical exam related to the medication, is included.
There aren't any LCDs or Articles for Noridian Part B for any jurisdiction on this topic that I can find.
Where did you find the information that 90847 was being covered for family or couples counseling with DX Z63.0-Problems in relationship with spouse or partner? Typically, Medicare only covers medically necessary conditions and services and I'm not sure that Medicare would consider relationship problems with a spouse or partner condition which requires treatment, the counseling represented by 90847, is medically necessary.