This study investigates the micromilling of AISI H13 manufactured by directed energy deposition, with a focus on the tool wear, surface integrity, and burr area formation. The parameters analyzed were the mean arithmetic deviation (Ra), the root mean square deviation (Rq), the skewness (Rsk), and the kurtosis (Rku). The microchannels measure 13.0 mm in length using micro end mills with a 400 μm diameter coated with (Al, Ti)N. The Vascomil MMA cutting fluid was applied using the minimum quantity lubrication technique. The input variables were a spindle speed of 10,000 rpm, a cutting speed of 12.57 m/min, a feed rate of 1.0 μm/tooth, a radial depth of cut of 400.0 μm, and an axial depth of cut of 40.0 μm. The wear was evaluated by comparing the worn profile of the used microtool on the secondary flank face with that of a new microtool. The results showed a roundness of the cutting-edges. Additionally, after micromachining 78 mm, the wear reached 11.91 µm (left cutting-edge) and 15.37 µm (right cutting-edge), corresponding to 3% and 4% of microtool diameter, respectively. The roughness Ra and Rq increased with the machined length. Moreover, the roughness parameter Rku decreased by 41.5%, indicating a transition from sharp shape peaks and valleys to rounded shapes.