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SubstancePoisoning, Accidental (unintentional)Poisoning, Intentional self-harmPoisoning, AssaultPoisoning, UndeterminedAdverse effectUnderdosing
Caustic NEC (s)T54.91T54.92T54.93T54.94
    alkaliT54.3X1T54.3X2T54.3X3T54.3X4
    hydroxideT54.3X1T54.3X2T54.3X3T54.3X4
    potashT54.3X1T54.3X2T54.3X3T54.3X4
    sodaT54.3X1T54.3X2T54.3X3T54.3X4
    specified NECT54.91T54.92T54.93T54.94