Karang Pule Public Health Center (PHC) in Mataram, the patient or the patient's family registers by coming directly to the puskesmas. This system causes patients or their families have to wait a long time and the danger is they are vulnerable to Covid-19 transmission. Another impact is frequent errors in the selection of the queue place. Queue place is divided into 2 parts, namely queue A and queue B. Queue A is for patients under 55 years old and queue B is for elderly people above 55 years. Some patients, especially the elderly who do not know their age, cause patients to choose the wrong place to queue and wait even longer. The research objective is to design an Android-based outpatient registration system. The methodology used in this design the application is Waterfall. Data collection techniques used such as observation, interviews, and literature studies. This research produced an application design where patients can see the queue number being served so that patients can estimate the time to come to the intended polyclinic.

The information system was based on existing problems. This information system was computerized where borrowing and returning medical records is no longer manual. The purpose of the information system was to make it easier for officers to record, borrow and return. This model of tracer information system development for medical record files uses the waterfall method which includes requirements analysis and definition, system and design software, for the next stage, namely Implementation and unit testing and operation and maintenance, which is not carried out.

In order to improve the quality and quantity of the learning process, the Medical Records Laboratory has supporting facilities, so that each student can carry out the practice of managing medical record documents and information in accordance with their competence. Information technology-based information systems are currently not available in the Medical Records Laboratory, so that when students do practicum it is not effective and efficient, therefore the availability of information technology-based information systems needs to exist. This study aims to determine the design of information systems, and build a medical record laboratory information system at Medica Farma Husada Mataram Polytechnic, including: Old and alternative system design, Database Design, ERD (Entity Relational Diagram), UML (Unified Modeling Language) Design, Interface Implementation. This research is qualitative research using the waterfall method. The results showed that the hierarchy of the information system for the Medical Records Laboratory of the Medica Farma Husada Mataram Polytechnic was made by the Php program and was also accompanied by the use of a MySQL database integrated with a good security system. The process consists of Patient Registration, Polyclinic Data Collection, Doctor Data Collection, Drug Data Collection, and the Output consists of Patient data reports, Print Out Pasie data, Polyclinic data reports, Doctor data reports, Drug Data Reports. The conclusion of this research is that the design of an information system-based Medical Records Laboratory consists of 3 menus, namely patients, doctors and medical records officers.