The Portugal international was photographed smoking a cigarette outside of a restaurant during his recent birthday celebrations and was promptly dropped for Wednesday night's meeting with Villarreal at El Madrigal.
Coentrao was moved to defend his professionalism on Friday and he has now been included in the 19-strong panel for the visit of Sociedad to the Santiago Bernabeu.
Out-of-favour centre-half Raul Albiol is also named in the squad, but Jose Maria Callejon and Angel Di Maria remain sidelined through injury.
After successive draws in La Liga, Madrid will be hoping to get back to winning ways against Sociedad, with the game in the Spanish capital scheduled to kick off at 20:00CET.
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