diff --git a/crates/lance-graph-contract/src/ogar_codebook.rs b/crates/lance-graph-contract/src/ogar_codebook.rs
index 36e695d33..58f786560 100644
--- a/crates/lance-graph-contract/src/ogar_codebook.rs
+++ b/crates/lance-graph-contract/src/ogar_codebook.rs
@@ -712,10 +712,11 @@ pub const CODEBOOK: &[(&str, u16)] = &[
     // `tesseract-rs → doc.v1 → ogar-from-docv1 → DocIr → render`. Mirror of
     // `ogar_vocab::class_ids::DOCUMENT`.
     ("document", 0x080B),
-    // ── 0x09XX — Health domain (MedCare; 0x0901..0x0907 = OGIT
-    // NTO/Healthcare promotion; 0x0908..0x090C = harvest-derived mints,
+    // ── 0x09XX — Health domain (0x0901..0x0907 = OGIT
+    // NTO/Healthcare promotion; 0x0908..0x090D = harvest-derived mints,
     // furnace-exam rounds 2 & 4 — no OGIT entity, no port alias yet;
-    // 0x090C external_practice is three-axis-witnessed, FHIR Organization) ──
+    // 0x090C external_practice is three-axis-witnessed, FHIR Organization;
+    // 0x090D specialist_referral = Facharztüberweisung, OGAR #361) ──
     ("patient", 0x0901),
     ("diagnosis", 0x0902),
     ("lab_value", 0x0903),
@@ -728,6 +729,7 @@ pub const CODEBOOK: &[(&str, u16)] = &[
     ("examination", 0x090A),
     ("practitioner", 0x090B),
     ("external_practice", 0x090C),
+    ("specialist_referral", 0x090D),
     // ── 0x0AXX — Anatomy domain (FMA reference ontology; public, not PHI) ──
     // FMA anatomy lives HERE, not in Health 0x09 — reference structure is
     // public, a clinical finding *about* it is PHI. `CLASSID_FMA` retargets to