Application-based Fecal Microbiota Transplantation segmentation currently revolves around recurrent _Clostridioides difficile_ infection (rCDI) as the dominant value driver, commanding roughly 85 % of global procedure volumes and reimbursable indications. The remaining addressable share is fragmented across emerging indications: ulcerative colitis (≈6 %), Crohn’s disease (≈3 %), IBS-D (≈2 %), autism spectrum disorder, hepatic encephalopathy, and graft-versus-host disease collectively account for <4 %. rCDI procedures generate the highest per-patient revenue because they are single-administration, hospital-financed, and supported by formal CPT codes, whereas chronic indications require repeat dosing, lowering per-dose pricing power. As regulatory clarity improves, ulcerative colitis is projected to outgrow other non-rCDI segments, driven by Phase II/III mucosal healing end-points that could expand the treatable population from ~30 k refractory cases today to an estimated 220 k moderate-to-severe cases in 2030, translating into a CAGR of 28 % versus 6 % for rCDI.