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Input offset voltage/bias current noise contribution in operational amplifiers

In noise analysis of operational amplifiers, the following is considered:

 * Noise generated by the external components (resistors in feedback network etc.)
 * Noise generated by the operational amplifier itself

Manufacturers provide "input-referred" voltage and current noise specifications for most operational amplifiers. This figure includes shot, thermal, and flicker noise ([Texas Instruments](https://www.ti.com/lit/an/slva043b/slva043b.pdf)). Op-amps also have an input offset voltage and input bias current specifications.

Does the input offset/bias current contribute to the noise of the operational amplifier? If yes, is it included in the input-referred noise figures or does it have to be accounted for separately?