irAE-Map v1.0.0: codebook and mapping rationale

Codebook and mapping rationale for irAE-Map, a clinician-curated crosswalk of immune-related adverse events of immune checkpoint inhibitor therapy to CTCAE v6.0, ICD-10-CM FY2027 and FAERS reaction terms. Describes sources, candidate generation, the author's decision process, quality checks, results, per-category rationale with look-alike diagnoses, the 2024 drug-cause code change, limitations and AI assistance.