The issuance of the BPJS National Health Insurance Law was a government effort to enhance the welfare of citizens by making it mandatory for them to become BPJS health insurance participants, with a deadline set for January 2019. However, as of May 2022, around 13.79% (according to Worldometer) or 12.26% (according to the Home Ministry) of citizens have not yet joined, due to various factors, including issues related to the BPJS health insurance membership regulations. This paper aims to provide clarity on the construction of health insurance membership regulations as outlined in Law Number 24 of 2011 concerning the Social Security Agency connected to the National Social Security System. The research utilized a descriptive analysis with a statutory approach, along with secondary data obtained through a library study to collect data, and systematic and teleological analysis to analyze the data. The results of the study indicate that the construction of BPJS health insurance membership regulations follows the Stufen theory, which is in accordance with the hierarchy of occupying concrete norms (Hans Kelsen) or formalgezets (Hans Nawiasky).
 Keywords: construction, national health insurance, national social security system regulation