An implantable medical device has a housing with a fixation element disposed adjacent a first end of the housing and a retrieval element disposed adjacent a second end of the housing. An outer housing surface includes a first region having a first surface texture with a first average surface roughness and a second region having a second surface texture with a second average surface roughness that is different from the first average surface roughness. An insulative layer includes a first region overlying the first surface texture and a second region overlying the second surface texture, wherein an outer surface of the insulative layer emulates the first surface texture in the first region of the insulative layer and emulates the second surface texture in the second region of the insulative layer.
