The Cystic Fibrosis (CF) Therapeutics segmentation by application isolates four primary usage domains that together drive the market’s revenue composition. Pulmonary therapy—encompassing inhaled bronchodilators, mucolytics, and CFTR modulators—captures the largest share, reflecting the disease’s hallmark respiratory decline and the high price points of targeted modulators. Nutritional support, which includes pancreatic enzyme replacement, fat-soluble vitamin supplementation, and specialized dietary formulations, accounts for a substantial secondary portion, as malabsorption remains a chronic cost driver. Infection management covers chronic antibiotic regimens, anti‑pseudomonal agents, and emerging bacteriophage therapies, contributing a growing slice due to escalating resistance and the need for long‑term prophylaxis. Finally, systemic and supportive care—spanning anti‑inflammatory drugs, bone health agents, and emerging gene‑editing platforms—adds a modest yet expanding layer, especially as novel curative approaches progress through clinical pipelines. Collectively, these application categories delineate the market taxonomy and illustrate how each functional area underpins overall market size.