In this paper, we present a novel data-hiding method that does not interfere with other data-hiding techniques (e.g., sign bits hiding) that are already included into state-of-the-art coding standards such as HEVC/H.265. One of the main features that are inherent to the proposed technique is its orientation on hierarchically-structured units (e.g., a hierarchy in HEVC/H.265 that includes coding, prediction and transform units). As shown in the paper, this method provides higher coding gain when applied to scalar-quantized values. Finally, we present experimental results that confirm the high RD-performance of this technique in comparison with explicit signaling and discuss its suitability for HEVC-compatible watermarking.