I think it would be worth having a discussion with your state or county VA rep to check for your husbands benefits or eligibility. I know the county I live in has a VA rep who helps veterans get medical services or information. It looks like OFEV may be covered or part of the VA's treatment for pulmonary fibrosis -- "2015 — Nintedanib is indicated for the treatment of idiopathic pulmonary fibrosis (IPF). Dosage Form(s) Under. Review. Capsules containing 100 or 150mg nintedanib." -- https://www.pbm.va.gov/PBM/clinicalguidance/drugmonographs/Nintedanib_OFEV_Monograph.pdf

Also, here is a link to the VA Pharmacy Benefits Management Services that might provide some answers - https://www.pbm.va.gov/