Seven models on one shared split (79,742 / 17,088 / 17,088, seed 42), a single global threshold τ = 0.5, no per-model tuning. ShifaMind leads while being the only entry that produces concept-mediated explanations.
| # | Model | Macro-F1 |
|---|---|---|
| 1 | ShifaMind 👑tied w/ LAAT, p=0.452 | 0.712 |
| 2 | LAAT | 0.711 |
| 3 | KEPT | 0.687 |
| 4 | CAML | 0.674 |
| 5 | PLM-ICD | 0.650 |
| 6 | GKI-ICD | 0.649 |
| 7 | Gemini 2.5 Pro * | 0.435 |
| 8 | GPT-5.4 * | 0.417 |
| 9 | Claude Sonnet 4.6 * | 0.343 |
| 10 | Vanilla CBM | 0.164 |
| Comparison | Δ F1 | 95% CI | p |
|---|---|---|---|
| vs. LAAT | +0.001 | [−0.001, +0.003] | 0.452 |
| vs. KEPT | +0.025 | [+0.022, +0.028] | <10⁻⁴ |
| vs. CAML | +0.038 | [+0.036, +0.041] | <10⁻⁴ |
| vs. PLM-ICD | +0.062 | [+0.059, +0.065] | <10⁻⁴ |
| vs. GKI-ICD | +0.064 | [+0.060, +0.067] | <10⁻⁴ |
| vs. Vanilla CBM | +0.548 | [+0.545, +0.552] | <10⁻⁴ |
Concept Bottleneck Models stay auditable by routing predictions through human-readable concepts, but squeezing a rich clinical representation through a narrow scalar layer chokes capacity. ShifaMind keeps the scalar concept interface and changes the bottleneck's form instead of its width.
Learnable concept queries cross-attend to the note, producing a full-dimensional concept-grounded representation that stays concept-relevant, not compressed to 160 scalars.
A learned gate g = σ(·) modulates that representation element-wise. The encoder summary steers which concepts matter; it never bypasses them.
No direct path from encoder to diagnosis head. Zero out the concept representation and the output collapses, so prediction is structurally concept-mediated.
Against a capacity-matched Vanilla CBM (same backbone, context, optimizer, loss, where only the bottleneck differs), ShifaMind wins on three behavioral metrics with non-overlapping bootstrap 95% CIs.
Masking the token spans of a diagnosis's top concepts drops that diagnosis's probability by 0.114 more than other diagnoses in the same note (95% CI [0.103, 0.127]).
ShifaMind: A Multiplicative Concept Bottleneck for Interpretable ICD-10 Coding · Mohammed Sameer Syed, Xuan Lu · College of Information Science, University of Arizona.
@article{syed2026shifamind,
title = {ShifaMind: A Multiplicative Concept Bottleneck for Interpretable ICD-10 Coding},
author = {Syed, Mohammed Sameer and Lu, Xuan},
journal = {arXiv preprint arXiv:2605.08482},
year = {2026}
}