IV.s IV - Airway involvement
IV.s - Lolalized airway inflammation/burgeoning/stenosis: The pill aspiration syndrome VIII.d VIII - Central-large-upper airway (incl. pharyngeal-nasal) involvement
VIII.d - Thermal (burns, frostbite), chemical or caustic injury on the face, mouth, tongue, pharynx or upper airway VIII.ad VIII - Central-large-upper airway (incl. pharyngeal-nasal) involvement
VIII.ad - Osteonecrosis of the jaw X.b X - Systemic/Distant conditions, syndromes and reactions
X.b - Antiphospholipid antibodies w/wo the APL syndrome XI.i XI - Miscellaneous
XI.i - Esophageal toxicity XI.o XI - Miscellaneous
XI.o - Dysphagia XV.bh XV - Pathology
XV.bh - Path: Foreign body reaction in large airway walls