This study aims to create “Outcome” items evaluated by families of children with medical complexity (CMC) (CF-Outcome) that are similar to the Home-visit Nursing Quality Indicators for Children (HNQIC) “Outcome” items, to examine the construct of “CF-Outcome.” This study was cross-sectional, and participants were 150 families of children with medical complexity. Based on the ten items of the HNQIC “Outcome” section, we developed ten outcome items evaluated with 5-point Likert scales, and tested the validity of the construct and internal consistency of the “CF-Outcome.” Spearman correlation coefficients were calculated to identify correlations between the “CF-Outcome” factors and five “Service user satisfaction” factors. The exploratory factor analysis yielded 8 items in 3 factors, with a Cronbach's α of 0.813. For the correlation between factors of “CF-Outcome” and “Service user satisfaction”, there was no statistically significant correlation between the second factor of “CF-Outcome” and the following three factors: “Service user satisfaction”: <24-hour support>, <Care according to change>, and <Proactive patient care>. However, there were statistically significant correlations among the other factors, from r = .165 (p < .01) to r = .367 (p < .001). The findings suggest the usefulness of the “CF-Outcome” for CMC families to evaluate the outcomes of home-visit nursing services. However, there is a need to improve the wording of items to eliminate variations in responses among raters. We need to clarify the concepts of the three factors further, and examine specific items that can measure the concepts.