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Use it only when no more specific modifier applies, specifically XU (Unusual Non-Overlapping Service), XS (Separate Structure), XE (Separate Encounter), or XP (Separate Practitioner)
Rohr, M
Vitamin B12 Supplementation Dietary Changes Addressing Underlying Causes Monitoring Lifestyle Modifications Follow-up Care Vitamin B12 Supplementation Vitamin B12 supplementation is the most common treatment used to relieve the symptoms of deficiency
Broad Applicability: Suitable for a variety of injectable drugs as directed by drug manufacturers
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