Smart Cities (SC) are a growing trend, and ICT is a fundamental element for their development. Elaborating national policies about SC requires measuring cities' success in ICT adoption. This article describes the Smart City ICT Adoption Maturity Model (SCIAMM), which defines five maturity levels, and consists of five domains (e-government strategy, public innovation, data, infrastructure, and services), 15 key domain areas (KDA), and 48 critical variables (CV). An initial evaluation was conducted, using public data from the IT Ministry (MinICT) for the seven largest Colombian cities. A comparison of 2015 and 2016 values shows the simultaneous improvement some areas (Public Wi-Fi and Open Data) and worsening of some strategy-related areas (Governance, IT plans, and IT Operation); further examination suggests that it may reflect reprioritization of attention and resources as cities aimed to exploit new national programs on Public Wi-Fi and Open Data. SCIAMM identification of this "collateral damage" of national programs shows its value as a public policy designer tool.